Don't recalculate approval metrics on approval remove

Even of approval happened regardless if it was removed
immediately after or not. We shouldn't mess data
with recalculation.

ee/app/services/merge_requests/remove_approval_service.rb

@@ -14,7 +14,6 @@ module MergeRequests
       if approval.destroy_all # rubocop: disable DestroyAll
         merge_request.reset_approval_cache!
         create_note(merge_request)
-        recalculate_approvals_metrics(merge_request)
 
         if currently_approved
           notification_service.async.unapprove_mr(merge_request, current_user)
@@ -31,11 +30,5 @@ module MergeRequests
     def create_note(merge_request)
       SystemNoteService.unapprove_mr(merge_request, current_user)
     end
-
-    def recalculate_approvals_metrics(merge_request)
-      return unless merge_request.project.feature_available?(:code_review_analytics)
-
-      Analytics::RefreshApprovalsData.new(merge_request).execute_async(force: true)
-    end
   end
 end

ee/changelogs/unreleased/210301-dont-recalculate-approval-metric-on-unapprove.yml

+---
+title: Remove approval metric recalculation when approval was removed
+merge_request: 27071
+author:
+type: changed

ee/spec/services/merge_requests/remove_approval_service_spec.rb

@@ -50,33 +50,6 @@ describe MergeRequests::RemoveApprovalService do
 
         execute!
       end
-
-      context 'approvals metrics calculation' do
-        context 'when code_review_analytics project feature is available' do
-          before do
-            stub_licensed_features(code_review_analytics: true)
-          end
-
-          it 'schedules RefreshApprovalsData' do
-            expect(Analytics::CodeReviewMetricsWorker)
-              .to receive(:perform_async).with('Analytics::RefreshApprovalsData', merge_request.id, force: true)
-
-            service.execute(merge_request)
-          end
-        end
-
-        context 'when code_review_analytics is not available' do
-          before do
-            stub_licensed_features(code_review_analytics: false)
-          end
-
-          it 'does not schedule for RefreshApprovalsData' do
-            expect(Analytics::CodeReviewMetricsWorker).not_to receive(:perform_async)
-
-            service.execute(merge_request)
-          end
-        end
-      end
     end
 
     context 'with an approved merge request' do