remove schedule

.github/workflows/update-preview-deps-ci.yml

@@ -1,7 +1,5 @@
-name: "Update Preview Dependencies (feat/v2-ci)"
+name: "Update Preview Dependencies (feat/ci)"
 on:
-  schedule:
-    - cron: "15 */3 * * *" # every three hours
   workflow_dispatch:
 
 jobs: