Clean up .uuid files with fc-cache -f too
.uuid file was obsoleted >5 years ago and it was supposed to be cleaned up by fc-cache -r but not -f. This change tries to clean it up by fc-cache -f.
.uuid file was obsoleted >5 years ago and it was supposed to be cleaned up by fc-cache -r but not -f. This change tries to clean it up by fc-cache -f.