Remove useEffect that was setting incorrect display value for pending period

public/app/features/alerting/unified/components/rule-editor/GrafanaEvaluationBehavior.tsx

@@ -105,11 +105,6 @@ function FolderGroupAndEvaluationInterval({
     setIsEditingGroup(false);
   };
 
-  // when the group evaluation interval changes, update the pending period to match
-  useEffect(() => {
-    setValue('evaluateFor', evaluateEvery);
-  }, [evaluateEvery, setValue]);
-
   const onOpenEditGroupModal = () => setIsEditingGroup(true);
 
   const editGroupDisabled = groupfoldersForGrafana?.loading || isNewGroup || !folderUid || !groupName;