Remove loadHTMLFixture usage in `spec/frontend/prometheus_metrics/`
This MR solves #405313 (closed)
Remove loadHTMLFixture usage in ee/spec/frontend/search/
ee/spec/frontend/search/highlight_blob_search_result_spec.js:11: loadHTMLFixture(ceFixture);`
ee/spec/frontend/search/highlight_blob_search_result_spec.js:22: loadHTMLFixture(fixture);`