Alerting: Remove unused component / file (#101568)

public/app/features/alerting/unified/hooks/alert-details/useRuleViewerPageTitle.tsx

@@ -1,29 +0,0 @@
-import { useLayoutEffect } from 'react';
-
-import { Branding } from 'app/core/components/Branding/Branding';
-import { useGrafana } from 'app/core/context/GrafanaContext';
-import { CombinedRule } from 'app/types/unified-alerting';
-
-/**
- * We're definitely doing something odd here, and it all boils down to
- * 1. we have a page layout that is different from what <Page /> forces us to do with pageNav
- * 2. because of 1. we don't get to update the pageNav that way and circumvents
- *     the `usePageTitle` hook in the <Page /> component
- *
- * Therefore we are manually setting the breadcrumb and the page title.
- */
-export function useRuleViewerPageTitle(rule?: CombinedRule) {
-  const { chrome } = useGrafana();
-
-  useLayoutEffect(() => {
-    if (rule?.name) {
-      chrome.update({ pageNav: { text: rule.name } });
-    }
-  }, [chrome, rule]);
-
-  if (!rule) {
-    return;
-  }
-
-  document.title = `${rule.name} - Alerting - ${Branding.AppTitle}`;
-}