chore: remove test(14) and test(16) from the required checks

Author: alkatrivedi

.github/sync-repo-settings.yaml

@@ -8,8 +8,6 @@ branchProtectionRules:
       - "ci/kokoro: Samples test"
       - "ci/kokoro: System test"
       - lint
-      - test (14)
-      - test (16)
       - test (18)
       - cla/google
       - windows