[ci.yaml] Move roller to blocking (flutter#28134)

Casey Hillers · web-flow · commit 83264556e279 · 2021-08-17T12:02:02.000-07:00
diff --git a/.ci.yaml b/.ci.yaml
@@ -330,6 +330,5 @@ targets:
     scheduler: luci
 
   - name: Linux ci_yaml engine roller
-    bringup: true
     recipe: infra/ci_yaml
     scheduler: luci
