Do not print a noisy warning when there is no .licenseignore file.
-rw-r--r-- 306 AUTHORS
-rw-r--r-- 544 COPYING
-rw-r--r-- 865 README
-rw-r--r-- 34520 agpl-3.0.txt
drwxr-xr-x - compute-image-cleaner
drwxr-xr-x - costanalyzer
drwxr-xr-x - git
drwxr-xr-x - jenkins