Enable recent items search by default removing FF

This removes the `recent_items_search` feature flag which has been
enabled on GitLab.com for everyone already which will make it enabled by
default for self managed customers as well now.

changelogs/unreleased/244277-remove-ff-recent-items-search.yml

+---
+title: Autocomplete recently viewed issues in the global search bar
+merge_request: 42302
+author:
+type: added

config/feature_flags/development/recent_items_search.yml

----
-name: recent_items_search
-introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/40669
-rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/244277
-group: group::global search
-type: development
-default_enabled: false
\ No newline at end of file

doc/user/search/index.md

@@ -170,6 +170,7 @@ You can also type in this search bar to see autocomplete suggestions for:
 - Various help pages (try and type **API help**)
 - Project feature pages (try and type **milestones**)
 - Various settings pages (try and type **user settings**)
+- Recently viewed issues (try and type some word from the title of a recently viewed issue)
 
 ## To-Do List
 

lib/gitlab/search/recent_issues.rb

@@ -13,8 +13,6 @@ module Gitlab
       end
 
       def log_view(issue)
-        return unless recent_items_enabled?
-
         with_redis do |redis|
           redis.zadd(key, Time.now.to_f, issue.id)
           redis.expire(key, @expires_after)
@@ -29,8 +27,6 @@ module Gitlab
       end
 
       def search(term)
-        return Issue.none unless recent_items_enabled?
-
         ids = with_redis do |redis|
           redis.zrevrange(key, 0, @items_limit - 1)
         end.map(&:to_i)
@@ -51,10 +47,6 @@ module Gitlab
       def type
         Issue
       end
-
-      def recent_items_enabled?
-        Feature.enabled?(:recent_items_search, @user)
-      end
     end
   end
 end

spec/lib/gitlab/search/recent_issues_spec.rb

@@ -8,10 +8,6 @@ RSpec.describe ::Gitlab::Search::RecentIssues, :clean_gitlab_redis_shared_state
   let(:recent_issues) { described_class.new(user: user, items_limit: 5) }
   let(:project) { create(:project, :public) }
 
-  before do
-    stub_feature_flags(recent_items_search: true)
-  end
-
   describe '#log_viewing' do
     it 'adds the item to the recent items' do
       recent_issues.log_view(issue)
@@ -51,24 +47,6 @@ RSpec.describe ::Gitlab::Search::RecentIssues, :clean_gitlab_redis_shared_state
 
       expect(results).to eq([issue])
     end
-
-    context 'when recent_items_search feature flag is disabled' do
-      before do
-        stub_feature_flags(recent_items_search: false)
-      end
-
-      it 'does not store anything' do
-        recent_issues.log_view(issue)
-
-        # Re-enable before searching to prove that the `log_view` call did
-        # not persist it
-        stub_feature_flags(recent_items_search: true)
-
-        results = recent_issues.search('hello')
-
-        expect(results).to be_empty
-      end
-    end
   end
 
   describe '#search' do
@@ -105,19 +83,5 @@ RSpec.describe ::Gitlab::Search::RecentIssues, :clean_gitlab_redis_shared_state
 
       expect(recent_issues.search('matching')).not_to include(private_issue)
     end
-
-    context 'when recent_items_search feature flag is disabled' do
-      it 'does not return anything' do
-        recent_issues.log_view(issue)
-
-        # Disable after persisting to prove that the `search` is not searching
-        # anything
-        stub_feature_flags(recent_items_search: false)
-
-        results = recent_issues.search('hello')
-
-        expect(results).to be_empty
-      end
-    end
   end
 end