Removes moved_mr_sidebar flag

...s/javascripts/boards/components/board_content_sidebar.vue

app/assets/javascripts/diffs/components/diff_file_header.vue

app/assets/javascripts/diffs/components/diffs_file_tree.vue

...ets/javascripts/issues/show/components/header_actions.vue

app/assets/javascripts/main.js

app/assets/javascripts/merge_request_tabs.js

...s/javascripts/merge_requests/components/sticky_header.vue

...ssets/javascripts/notes/components/discussion_counter.vue

app/assets/javascripts/right_sidebar.js

...avascripts/sidebar/components/lock/issuable_lock_form.vue

...components/subscriptions/sidebar_subscriptions_widget.vue

...ts/sidebar/components/todo_toggle/sidebar_todo_widget.vue

...ts/javascripts/vue_shared/components/mr_more_dropdown.vue

app/assets/stylesheets/framework/diffs.scss

app/assets/stylesheets/page_bundles/merge_requests.scss

app/controllers/projects/incidents_controller.rb

app/controllers/projects/issues_controller.rb

app/controllers/projects/merge_requests_controller.rb

app/helpers/merge_requests_helper.rb

app/helpers/nav_helper.rb