Marks Linux_android flutter_gallery_sksl_warmup__transition_perf to be unflaky (#105623)

Author: fluttergithubbot

.ci.yaml

@@ -2010,7 +2010,6 @@ targets:
   - name: Linux_android flutter_gallery_sksl_warmup__transition_perf
     recipe: devicelab/devicelab_drone
     presubmit: false
-    bringup: true
     timeout: 60
     properties:
       tags: >