Remove gosu untrusted signature

The GPG signature of gosu package is not trusted
and thus the import fails.

Package is downloaded from GitHub over HTTPS so
it should be already protected from man-in-the-middle
modifications.

Change-Id: If5e1704320432f97ec32ae6b7a82239de0f94539
1 file changed
tree: cdbffa66eca9d988af9ab0fea0abe14c562663d1
  1. jenkins/
  2. jenkins-docker/
  3. worker/
  4. .gitignore