Remove build step making binaries bucket public (#191)

This is done as there are no more public buckets under
google.com org in any project.

Author: nirbarjoseph-cloud

rollout/cli_tools_cloudbuild_build.yaml

@@ -62,6 +62,3 @@ steps:
 - name: 'gcr.io/cloud-builders/gsutil'
   args: ['cp', '/workspace/windows/*', 'gs://$_IMAGE_PROJECT/$_RELEASE/windows/']
 
-# Make binaries world-readable - _IMAGE_PROJECT
-- name: 'gcr.io/cloud-builders/gsutil'
-  args: ['-m', 'acl', '-r', 'ch', '-u', 'AllUsers:R', 'gs://$_IMAGE_PROJECT/$_RELEASE/*']