Remove redundant header from thresholds table

- Parent tab already has 'Alert Thresholds' title and description
- Avoid repeating the same messaging twice

frontend-modern/src/components/Alerts/ThresholdsTable.tsx

@@ -1190,16 +1190,6 @@ const dockerContainersGroupedByHost = createMemo<Record<string, Resource[]>>((pr
 
   return (
     <div class="space-y-6">
-      {/* Page Header */}
-      <div>
-        <h3 class="text-base font-semibold text-gray-900 dark:text-gray-100">
-          Alert thresholds
-        </h3>
-        <p class="mt-1 text-sm text-gray-500 dark:text-gray-400">
-          Set custom alert thresholds for each resource or use global defaults
-        </p>
-      </div>
-
       {/* Search Bar */}
       <div class="relative">
         <input