Clenup deployments_finder_implicitly_enforce_ordering feature flag

This commit cleans up the
`deployments_finder_implicitly_enforce_ordering_for_updated_at_filter`
feature flag which has already been enabled by default.

Changelog: other

app/finders/deployments_finder.rb

@@ -136,7 +136,7 @@ class DeploymentsFinder
     # Implicitly enforce the ordering when filtered by `updated_at` column for performance optimization.
     # See https://gitlab.com/gitlab-org/gitlab/-/issues/325627#note_552417509.
     # We remove this in https://gitlab.com/gitlab-org/gitlab/-/issues/328500.
-    if filter_by_updated_at? && implicitly_enforce_ordering_for_updated_at_filter?
+    if filter_by_updated_at?
       sort_params.replace('updated_at' => sort_direction)
     end
 
@@ -170,15 +170,6 @@ class DeploymentsFinder
     params[:order_by].to_s == 'finished_at'
   end
 
-  def implicitly_enforce_ordering_for_updated_at_filter?
-    return false unless params[:project].present?
-
-    ::Feature.enabled?(
-      :deployments_finder_implicitly_enforce_ordering_for_updated_at_filter,
-      params[:project],
-      default_enabled: :yaml)
-  end
-
   # rubocop: disable CodeReuse/ActiveRecord
   def preload_associations(scope)
     scope.includes(

config/feature_flags/development/deployments_finder_implicitly_enforce_ordering_for_updated_at_filter.yml

----
-name: deployments_finder_implicitly_enforce_ordering_for_updated_at_filter
-introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/59771
-rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/329286
-milestone: '13.12'
-type: development
-group: group::release
-default_enabled: true

spec/finders/deployments_finder_spec.rb

@@ -81,16 +81,6 @@ RSpec.describe DeploymentsFinder do
           it 'returns deployments with matched updated_at' do
             is_expected.to match_array([deployment_2, deployment_1])
           end
-
-          context 'when deployments_finder_implicitly_enforce_ordering_for_updated_at_filter feature flag is disabled' do
-            before do
-              stub_feature_flags(deployments_finder_implicitly_enforce_ordering_for_updated_at_filter: false)
-            end
-
-            it 'returns deployments with matched updated_at' do
-              is_expected.to match_array([deployment_1, deployment_2])
-            end
-          end
         end
 
         context 'when the environment name is specified' do
@@ -244,20 +234,6 @@ RSpec.describe DeploymentsFinder do
           expect(subject.order_values.first.to_sql).to eq(Deployment.arel_table[:updated_at].asc.to_sql)
           expect(subject.order_values.second.to_sql).to eq(Deployment.arel_table[:id].asc.to_sql)
         end
-
-        context 'when deployments_finder_implicitly_enforce_ordering_for_updated_at_filter feature flag is disabled' do
-          before do
-            stub_feature_flags(deployments_finder_implicitly_enforce_ordering_for_updated_at_filter: false)
-          end
-
-          it 'sorts by only one column' do
-            expect(subject.order_values.size).to eq(1)
-          end
-
-          it 'sorts by `id`' do
-            expect(subject.order_values.first.to_sql).to eq(Deployment.arel_table[:id].asc.to_sql)
-          end
-        end
       end
 
       context 'when filtering by finished time' do