Update manifest.yaml (flutter#61062)

dnfield · mingwandroid · commit 6bd5c31ded4a · 2020-09-06T22:56:15.000+02:00
diff --git a/dev/devicelab/manifest.yaml b/dev/devicelab/manifest.yaml
@@ -809,7 +809,6 @@ tasks:
       usage widgets.
     stage: devicelab
     required_agent_capabilities: ["linux/android"]
-    flaky: true
 
   animated_placeholder_perf:
     description: >
