Merge pull request #14347 from spowelljr/removeTmpDelete

CI: Stop removing /tmp

hack/jenkins/cron/cleanup_and_reboot_Linux.sh

@@ -111,9 +111,6 @@ function cleanup() {
 	done
 	echo -e "\nafter the cleanup:"
 	overview
-
-	# clean up /tmp
-	find /tmp -name . -o -prune -exec rm -rf -- {} + >/dev/null 2>&1 || true
 }
 
 # Give 15m for Linux-specific cleanup