fix(home): remove duplicate handleStopGeneration declaration

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: waleedlatif1

apps/sim/app/workspace/[workspaceId]/home/home.tsx

@@ -229,14 +229,6 @@ export function Home({ chatId }: HomeProps = {}) {
     void stopGeneration().catch(() => {})
   }, [stopGeneration, workspaceId])
 
-  const handleStopGeneration = useCallback(() => {
-    captureEvent(posthogRef.current, 'task_generation_aborted', {
-      workspace_id: workspaceId,
-      view: 'mothership',
-    })
-    stopGeneration()
-  }, [stopGeneration, workspaceId])
-
   const handleSubmit = useCallback(
     (text: string, fileAttachments?: FileAttachmentForApi[], contexts?: ChatContext[]) => {
       const trimmed = text.trim()