[CI] Removed the cron attribute

Author: LAGNEAU Romain

.github/workflows/macos-linux-namespace.yml

@@ -4,8 +4,6 @@ name: MacOS
 on:
   pull_request:
     types: [opened, reopened, synchronize]
-  schedule:
-    - cron: '0 2 * * SUN'
 
 # https://stackoverflow.com/questions/66335225/how-to-cancel-previous-runs-in-the-pr-when-you-push-new-commitsupdate-the-curre#comment133398800_72408109
 # https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#concurrency