github: Revert "Run esp32&zephyr daily to keep mstr branch caches hot".

This reverts commit 046013a1ff.

Looks like since the latest round of GitHub Actions updates, the
Cache LRU algorithm is working as designed again.

This work was funded through GitHub Sponsors.

Signed-off-by: Angus Gratton <angus@redyak.com.au>

.github/workflows/ports_esp32.yml

@@ -12,10 +12,6 @@ on:
       - 'lib/**'
       - 'drivers/**'
       - 'ports/esp32/**'
-  schedule:
-     # Scheduled run exists to keep master branch ESP-IDF cache entry hot
-     # and prevent creating many redundant per-branch cache entries instead.
-     - cron: "20 0 * * *"
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}

.github/workflows/ports_zephyr.yml

@@ -12,10 +12,6 @@ on:
       - 'lib/**'
       - 'ports/zephyr/**'
       - 'tests/**'
-  schedule:
-     # Scheduled run exists to keep master branch Zephyr cache entry hot
-     # and prevent creating many redundant per-branch cache entries instead.
-     - cron: "40 4 * * *"
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}