Marks Linux_android flutter_gallery_sksl_warmup__transition_perf_e2e to be unflaky (#105624)

Author: fluttergithubbot

.ci.yaml

@@ -2024,7 +2024,6 @@ targets:
   - name: Linux_android flutter_gallery_sksl_warmup__transition_perf_e2e
     recipe: devicelab/devicelab_drone
     presubmit: false
-    bringup: true
     timeout: 60
     properties:
       tags: >