Remove project_search_by_full_path feature flag

app/models/project.rb

@@ -591,7 +591,7 @@ class Project < ApplicationRecord
     #
     # query - The search query as a String.
     def search(query, include_namespace: false)
-      if include_namespace && Feature.enabled?(:project_search_by_full_path, default_enabled: true)
+      if include_namespace
         joins(:route).fuzzy_search(query, [Route.arel_table[:path], Route.arel_table[:name], :description])
       else
         fuzzy_search(query, [:path, :name, :description])

spec/models/project_spec.rb

@@ -1740,32 +1740,12 @@ describe Project do
       let_it_be(:group) { create(:group) }
       let_it_be(:project) { create(:project, group: group) }
 
-      context 'when feature is enabled' do
-        before do
-          stub_feature_flags(project_search_by_full_path: true)
-        end
-
-        it 'returns projects that match the group path' do
-          expect(described_class.search(group.path, include_namespace: true)).to eq([project])
-        end
-
-        it 'returns projects that match the full path' do
-          expect(described_class.search(project.full_path, include_namespace: true)).to eq([project])
-        end
+      it 'returns projects that match the group path' do
+        expect(described_class.search(group.path, include_namespace: true)).to eq([project])
       end
 
-      context 'when feature is disabled' do
-        before do
-          stub_feature_flags(project_search_by_full_path: false)
-        end
-
-        it 'returns no results when searching by group path' do
-          expect(described_class.search(group.path, include_namespace: true)).to be_empty
-        end
-
-        it 'returns no results when searching by full path' do
-          expect(described_class.search(project.full_path, include_namespace: true)).to be_empty
-        end
+      it 'returns projects that match the full path' do
+        expect(described_class.search(project.full_path, include_namespace: true)).to eq([project])
       end
     end