Revert "TEMPORARY: run daily checks on PR"

This reverts commit 4c44603d55.

Reviewed-by: Saša Nedvědický <sashan@openssl.org>
Reviewed-by: Tom Cosgrove <tom.cosgrove@arm.com>
Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/25658)

.github/workflows/run-checker-daily.yml

@@ -8,9 +8,9 @@
 name: Run-checker daily
 # Jobs run daily
 
-on: [pull_request, push]
-#  schedule:
-#    - cron: '0 6 * * *'
+on:
+  schedule:
+    - cron: '0 6 * * *'
 permissions:
   contents: read