fix: remove unused GearIcon import

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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: MarkShawn2020

src/views/Workspace/ProjectDiagnostics.tsx

@@ -6,7 +6,6 @@ import {
   CrossCircledIcon,
   ExclamationTriangleIcon,
   ChevronDownIcon,
-  GearIcon,
   LockClosedIcon,
   CodeIcon,
 } from "@radix-ui/react-icons";