deprecate engine ci yaml roller (#160682)
This is no longer working after the monorepo merge:
https://github.com/flutter/flutter/issues/160670.
That issue tracks instead teaching the `Linux ci_yaml flutter roller` to
roll both sets of configurations.
diff --git a/engine/src/flutter/.ci.yaml b/engine/src/flutter/.ci.yaml
index ce9a8b3..0f84c6a 100644
--- a/engine/src/flutter/.ci.yaml
+++ b/engine/src/flutter/.ci.yaml
@@ -558,9 +558,3 @@
timeout: 120
properties:
config_name: windows_unopt
-
- - name: Linux ci_yaml engine roller
- bringup: true
- recipe: infra/ci_yaml
- properties:
- backfill: "false"
