Remove matrix

Author: jmagman

.cirrus.yml

@@ -137,7 +137,6 @@ task:
         - flutter channel $CHANNEL
         - ./script/incremental_build.sh build-examples --ipa
         - ./script/incremental_build.sh drive-examples
-  matrix:
     - name: lint_darwin_plugins
       script:
         # TODO(jmagman): Lint macOS podspecs but skip any that fail library validation.