Disable e2e-test schedule

I get pinged almost every day for a failing test, yet I'm 
not maintaining this repo anymore.

See also https://docs.github.com/en/actions/monitoring-and-troubleshooting-workflows/notifications-for-workflow-runs

Signed-off-by: ccremer <github.account@chrigel.net>

.github/workflows/e2e.yml

@@ -6,8 +6,8 @@ on:
       - master
     paths-ignore:
       - docs/**
-  schedule:
-    - cron: 37 10 * * 1-5 # At 10:37 on every day-of-week from Monday through Friday
+  # schedule:
+  #   - cron: 37 10 * * 1-5 # At 10:37 on every day-of-week from Monday through Friday
 
 jobs:
   test-e2e: