Disable audit event logging for pipeline destruction

AuditEventService isn't equipped to handle logging of the destruction of
entities such as CI pipelines. It's a project-level event that operates
on a pipeline. The current log doesn't even indicate that the pipeline
is being destroyed.

This is a CE backport of
https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/9105.  We're
removing the auditing call because it breaks the EE implementation.

1 files changed, 2 insertions, 2 deletions

diff --git a/spec/requests/api/pipelines_spec.rb b/spec/requests/api/pipelines_spec.rb
index eb002de62a2..52599db9a9e 100644
--- a/spec/requests/api/pipelines_spec.rb
+++ b/spec/requests/api/pipelines_spec.rb
@@ -456,8 +456,8 @@ describe API::Pipelines do
         expect(json_response['message']).to eq '404 Not found'
       end
 
-      it 'logs an audit event' do
-        expect { delete api("/projects/#{project.id}/pipelines/#{pipeline.id}", owner) }.to change { SecurityEvent.count }.by(1)
+      it 'does not log an audit event' do
+        expect { delete api("/projects/#{project.id}/pipelines/#{pipeline.id}", owner) }.not_to change { SecurityEvent.count }
       end
 
       context 'when the pipeline has jobs' do