Remove duplicate component declaration

Pipeline is failing for `static-analysis` causing pipeline to fail

https://gitlab.com/gitlab-org/gitlab-ee/-/jobs/117967498

app/assets/javascripts/jobs/components/job_app.vue

@@ -38,7 +38,6 @@ export default {
     StuckBlock,
     SharedRunner,
     Sidebar,
-    GlLoadingIcon,
   },
   mixins: [delayedJobMixin],
   props: {