Cleanup: Missed the schema and registration for the removed unused widgets (#6742)

## Summary

Just a cleanup following up on
https://github.com/Comfy-Org/ComfyUI_frontend/pull/6741

src/scripts/utils.ts

@@ -51,7 +51,6 @@ export async function addStylesheet(
   })
 }
 
-/** @knipIgnoreUnusedButUsedByCustomNodes */
 export { downloadBlob } from '@/base/common/downloadUtil'
 
 export function uploadFile(accept: string) {