Revert "Fix ci/clean.sh permission denied. (#1974)"

This reverts commit 13d3994.

Closes #1975.

Author: mikereiche

ci/clean.sh

@@ -1,7 +1,6 @@
 #!/bin/bash -x
 
 set -euo pipefail
-chown -R 1001:1001 .
 
 export JENKINS_USER=${JENKINS_USER_NAME}