Merge branch '438558-remove-referer-from-version-check' into 'master'

Remove referrer from Version Check

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/150073



Merged-by: Hitesh Raghuvanshi <hraghuvanshi@gitlab.com>
Approved-by: Piotr Skorupa <pskorupa@gitlab.com>
Co-authored-by: Niko Belokolodov <nbelokolodov@gitlab.com>

lib/version_check.rb

@@ -45,10 +45,6 @@ def self.data
     { version: Gitlab::VERSION }
   end
 
-  def self.headers
-    { "REFERER": Gitlab.config.gitlab.url }
-  end
-
   def self.url
     encoded_data = Base64.urlsafe_encode64(data.to_json)
 
@@ -68,7 +64,7 @@ def id
   end
 
   def calculate_reactive_cache(*)
-    response = Gitlab::HTTP.try_get(self.class.url, headers: self.class.headers)
+    response = Gitlab::HTTP.try_get(self.class.url)
 
     case response&.code
     when 200