Disable scheduled job in dev workflow

Comment out the scheduled cron job in the dev workflow.

Author: chrisbc

.github/workflows/dev.yml

@@ -1,8 +1,8 @@
 name: Dev workflow
 
 on:
-  schedule:
-    - cron:  '40 7 * * 0' # At 07:40 on Sunday
+  # schedule:
+  #  - cron:  '40 7 * * 0' # At 07:40 on Sunday
   pull_request:
     branches: [main, deploy-test]