Do not call environments service in repository model

app/models/repository.rb

@@ -203,7 +203,7 @@ class Repository
       update_ref!(ref, newrev, oldrev)
     end
-    after_remove_branch(user, branch_name)
+    after_remove_branch
     true
   end
@@ -524,12 +524,7 @@ class Repository
   end
   # Runs code after an existing branch has been removed.
-  def after_remove_branch(user, branch_name)
-    expire_branch_cache_after_removal
-    stop_environments_for_branch(user, branch_name)
-  end
-
-  def expire_branch_cache_after_removal
+  def after_remove_branch
     expire_has_visible_content_cache
     expire_branch_count_cache
     expire_branches_cache
@@ -1170,10 +1165,4 @@ class Repository
   def repository_event(event, tags = {})
     Gitlab::Metrics.add_event(event, { path: path_with_namespace }.merge(tags))
   end
-
-  def stop_environments_for_branch(user, branch_name)
-    Ci::StopEnvironmentService
-      .new(@project, user)
-      .execute(branch_name)
-  end
 end

app/services/git_push_service.rb

@@ -21,7 +21,7 @@ class GitPushService < BaseService
     @project.repository.after_push_commit(branch_name, params[:newrev])
     if push_remove_branch?
-      @project.repository.after_remove_branch(current_user, branch_name)
+      @project.repository.after_remove_branch
       @push_commits = []
     elsif push_to_new_branch?
       @project.repository.after_create_branch

lib/gitlab/github_import/importer.rb

@@ -111,7 +111,7 @@ module Gitlab
           end
         end
-        project.repository.expire_branch_cache_after_removal
+        project.repository.after_remove_branch
       end
       def restore_source_branch(pull_request)

spec/models/repository_spec.rb

@@ -1182,18 +1182,7 @@ describe Repository, models: true do
     it 'flushes the visible content cache' do
       expect(repository).to receive(:expire_has_visible_content_cache)
-      repository.after_remove_branch(user, 'master')
-    end
-
-    context 'when there is environment with review app available for branch' do
-      before do
-        create(:environment, :with_review_app, project: project)
-      end
-
-      it 'stops environment' do
-        expect_any_instance_of(Environment).to receive(:stop!)
-        repository.after_remove_branch(user, 'master')
-      end
+      repository.after_remove_branch
     end
   end