www/bluefish: Do not bundle MIME database files
Instead, the MIME database files will be created as a post-install
step thanks to USES=desktop-file-utils and USES=shared-mime-info.
This prevents the bluefish package (and other packages) from clobbering
the local MIME database, causing package conflicts and checksum
Reported by: Werner Lehmann <email@example.com>
Reported by: firstname.lastname@example.org
Submitted by: tijl