Remove mentioning of deprecated feature

ee/app/models/ee/ci/pipeline.rb

@@ -42,7 +42,7 @@ module EE
           codequality: nil,
           sast: %i[sast],
           dependency_scanning: %i[dependency_scanning],
-          container_scanning: %i[container_scanning sast_container],
+          container_scanning: %i[container_scanning],
           dast: %i[dast],
           performance: %i[merge_request_performance_metrics],
           license_management: %i[license_scanning license_management],