diff --git a/app/finders/group_members_finder.rb b/app/finders/group_members_finder.rb
index 1025e0ebc9b1885fa1a4a7af22231dd1f1df76aa..639db58b00d2718095d045e601a245da9294ab9a 100644
--- a/app/finders/group_members_finder.rb
+++ b/app/finders/group_members_finder.rb
@@ -86,11 +86,6 @@ def all_group_members(groups, shared_from_groups)
   end
 
   def members_of_groups(groups, shared_from_groups)
-    if Feature.disabled?(:members_with_shared_group_access, @group.root_ancestor)
-      groups << shared_from_groups unless shared_from_groups.nil?
-      return GroupMember.non_request.of_groups(find_union(groups, Group))
-    end
-
     members = GroupMember.non_request.of_groups(find_union(groups, Group))
     return members if shared_from_groups.nil?
 
diff --git a/config/feature_flags/development/members_with_shared_group_access.yml b/config/feature_flags/development/members_with_shared_group_access.yml
deleted file mode 100644
index f9d9a4fede44634657a15f2d09e7a8ebd1faf117..0000000000000000000000000000000000000000
--- a/config/feature_flags/development/members_with_shared_group_access.yml
+++ /dev/null
@@ -1,8 +0,0 @@
----
-name: members_with_shared_group_access
-introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/115346
-rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/398621
-milestone: '15.11'
-type: development
-group: group::tenant scale
-default_enabled: true
diff --git a/spec/finders/group_members_finder_spec.rb b/spec/finders/group_members_finder_spec.rb
index 4ac4dc3ba3728de5491327c8b20e7176feaf8ec0..18473a5e70bb4872d52e79bf747132d2bb5f2732 100644
--- a/spec/finders/group_members_finder_spec.rb
+++ b/spec/finders/group_members_finder_spec.rb
@@ -51,55 +51,51 @@
         user4_sub_group: create(:group_member, :developer, group: sub_group, user: user4, expires_at: 1.day.from_now),
         user4_group: create(:group_member, :developer, group: group, user: user4, expires_at: 2.days.from_now),
         user4_public_shared_group: create(:group_member, :developer, group: public_shared_group, user: user4),
-        user4_private_shared_group: create(:group_member, :developer,  group: private_shared_group, user: user4),
-        user5_private_shared_group: create(:group_member, :developer,  group: private_shared_group, user: user5_2fa)
+        user4_private_shared_group: create(:group_member, :developer, group: private_shared_group, user: user4),
+        user5_private_shared_group: create(:group_member, :developer, group: private_shared_group, user: user5_2fa)
       }
     end
 
-    shared_examples 'member relations' do
-      it 'raises an error if a non-supported relation type is used' do
-        expect do
-          described_class.new(group).execute(include_relations: [:direct, :invalid_relation_type])
-        end.to raise_error(ArgumentError, "invalid_relation_type is not a valid relation type. Valid relation types are direct, inherited, descendants, shared_from_groups.")
-      end
+    it 'raises an error if a non-supported relation type is used' do
+      expect do
+        described_class.new(group).execute(include_relations: [:direct, :invalid_relation_type])
+      end.to raise_error(ArgumentError, "invalid_relation_type is not a valid relation type. Valid relation types are direct, inherited, descendants, shared_from_groups.")
+    end
 
-      using RSpec::Parameterized::TableSyntax
-
-      where(:subject_relations, :subject_group, :expected_members) do
-        []                                                       | :group         | []
-        GroupMembersFinder::DEFAULT_RELATIONS                    | :group         | [:user1_group, :user2_group, :user3_group, :user4_group]
-        [:direct]                                                | :group         | [:user1_group, :user2_group, :user3_group, :user4_group]
-        [:inherited]                                             | :group         | []
-        [:descendants]                                           | :group         | [:user1_sub_sub_group, :user2_sub_group, :user3_sub_group, :user4_sub_group]
-        [:shared_from_groups]                                    | :group         | [:user1_public_shared_group, :user2_public_shared_group, :user3_public_shared_group, :user4_public_shared_group]
-        [:direct, :inherited, :descendants, :shared_from_groups] | :group         | [:user1_sub_sub_group, :user2_group, :user3_sub_group, :user4_public_shared_group]
-        []                                                       | :sub_group     | []
-        GroupMembersFinder::DEFAULT_RELATIONS                    | :sub_group     | [:user1_sub_group, :user2_group, :user3_sub_group, :user4_group]
-        [:direct]                                                | :sub_group     | [:user1_sub_group, :user2_sub_group, :user3_sub_group, :user4_sub_group]
-        [:inherited]                                             | :sub_group     | [:user1_group, :user2_group, :user3_group, :user4_group]
-        [:descendants]                                           | :sub_group     | [:user1_sub_sub_group, :user2_sub_sub_group, :user3_sub_sub_group, :user4_sub_sub_group]
-        [:shared_from_groups]                                    | :sub_group     | [:user1_public_shared_group, :user2_public_shared_group, :user3_public_shared_group, :user4_public_shared_group]
-        [:direct, :inherited, :descendants, :shared_from_groups] | :sub_group     | [:user1_sub_sub_group, :user2_group, :user3_sub_group, :user4_public_shared_group]
-        []                                                       | :sub_sub_group | []
-        GroupMembersFinder::DEFAULT_RELATIONS                    | :sub_sub_group | [:user1_sub_sub_group, :user2_group, :user3_sub_group, :user4_group]
-        [:direct]                                                | :sub_sub_group | [:user1_sub_sub_group, :user2_sub_sub_group, :user3_sub_sub_group, :user4_sub_sub_group]
-        [:inherited]                                             | :sub_sub_group | [:user1_sub_group, :user2_group, :user3_sub_group, :user4_group]
-        [:descendants]                                           | :sub_sub_group | []
-        [:shared_from_groups]                                    | :sub_sub_group | [:user1_public_shared_group, :user2_public_shared_group, :user3_public_shared_group, :user4_public_shared_group]
-        [:direct, :inherited, :descendants, :shared_from_groups] | :sub_sub_group | [:user1_sub_sub_group, :user2_group, :user3_sub_group, :user4_public_shared_group]
-      end
+    using RSpec::Parameterized::TableSyntax
+
+    where(:subject_relations, :subject_group, :expected_members) do
+      []                                                       | :group         | []
+      GroupMembersFinder::DEFAULT_RELATIONS                    | :group         | [:user1_group, :user2_group, :user3_group, :user4_group]
+      [:direct]                                                | :group         | [:user1_group, :user2_group, :user3_group, :user4_group]
+      [:inherited]                                             | :group         | []
+      [:descendants]                                           | :group         | [:user1_sub_sub_group, :user2_sub_group, :user3_sub_group, :user4_sub_group]
+      [:shared_from_groups]                                    | :group         | [:user1_public_shared_group, :user2_public_shared_group, :user3_public_shared_group, :user4_public_shared_group]
+      [:direct, :inherited, :descendants, :shared_from_groups] | :group         | [:user1_sub_sub_group, :user2_group, :user3_sub_group, :user4_public_shared_group]
+      []                                                       | :sub_group     | []
+      GroupMembersFinder::DEFAULT_RELATIONS                    | :sub_group     | [:user1_sub_group, :user2_group, :user3_sub_group, :user4_group]
+      [:direct]                                                | :sub_group     | [:user1_sub_group, :user2_sub_group, :user3_sub_group, :user4_sub_group]
+      [:inherited]                                             | :sub_group     | [:user1_group, :user2_group, :user3_group, :user4_group]
+      [:descendants]                                           | :sub_group     | [:user1_sub_sub_group, :user2_sub_sub_group, :user3_sub_sub_group, :user4_sub_sub_group]
+      [:shared_from_groups]                                    | :sub_group     | [:user1_public_shared_group, :user2_public_shared_group, :user3_public_shared_group, :user4_public_shared_group]
+      [:direct, :inherited, :descendants, :shared_from_groups] | :sub_group     | [:user1_sub_sub_group, :user2_group, :user3_sub_group, :user4_public_shared_group]
+      []                                                       | :sub_sub_group | []
+      GroupMembersFinder::DEFAULT_RELATIONS                    | :sub_sub_group | [:user1_sub_sub_group, :user2_group, :user3_sub_group, :user4_group]
+      [:direct]                                                | :sub_sub_group | [:user1_sub_sub_group, :user2_sub_sub_group, :user3_sub_sub_group, :user4_sub_sub_group]
+      [:inherited]                                             | :sub_sub_group | [:user1_sub_group, :user2_group, :user3_sub_group, :user4_group]
+      [:descendants]                                           | :sub_sub_group | []
+      [:shared_from_groups]                                    | :sub_sub_group | [:user1_public_shared_group, :user2_public_shared_group, :user3_public_shared_group, :user4_public_shared_group]
+      [:direct, :inherited, :descendants, :shared_from_groups] | :sub_sub_group | [:user1_sub_sub_group, :user2_group, :user3_sub_group, :user4_public_shared_group]
+    end
 
-      with_them do
-        it 'returns correct members' do
-          result = described_class.new(groups[subject_group]).execute(include_relations: subject_relations)
+    with_them do
+      it 'returns correct members' do
+        result = described_class.new(groups[subject_group]).execute(include_relations: subject_relations)
 
-          expect(result.to_a).to match_array(expected_members.map { |name| members[name] })
-        end
+        expect(result.to_a).to match_array(expected_members.map { |name| members[name] })
       end
     end
 
-    it_behaves_like 'member relations'
-
     it 'returns the correct access level of the members shared through group sharing' do
       shared_members_access = described_class
                                 .new(groups[:group])
@@ -110,14 +106,6 @@
       correct_access_levels = ([Gitlab::Access::DEVELOPER] * 3) << Gitlab::Access::REPORTER
       expect(shared_members_access).to match_array(correct_access_levels)
     end
-
-    context 'when members_with_shared_group_access feature flag is disabled' do
-      before do
-        stub_feature_flags(members_with_shared_group_access: false)
-      end
-
-      it_behaves_like 'member relations'
-    end
   end
 
   context 'search' do