ci: removing clirr from required checks (#505)

Author: blakeli0

java-grafeas/.github/sync-repo-settings.yaml

@@ -11,7 +11,6 @@ branchProtectionRules:
       - dependencies (8)
       - dependencies (11)
       - lint
-      - clirr
       - units (8)
       - units (11)
       - 'Kokoro - Test: Integration'
@@ -25,7 +24,6 @@ branchProtectionRules:
       - dependencies (8)
       - dependencies (11)
       - lint
-      - clirr
       - units (7)
       - units (8)
       - units (11)