Marks Mac_arm64_android run_debug_test_android to be unflaky (#117469)

Author: fluttergithubbot

.ci.yaml

@@ -3270,7 +3270,6 @@ targets:
 
   - name: Mac_arm64_android run_debug_test_android
     recipe: devicelab/devicelab_drone
-    bringup: true
     presubmit: false
     runIf:
       - dev/**