avahi-ui: Fix packaging and conflict with the avahi recipe
We need to remove the files from avahi-ui which conflict with the avahi recipe.
If we don't do this they trigger packaging warnings and can also overwrite
files in the sysroot unexpectedly causing build failures (if X depends on
avahi, it expects avahi's files to stay there, not disappear as avahi-ui
build/stages).
This patch cleans up the packaging although I wish there were an alterantive
to the do_install which makes my eyes bleed.
[YOCTO #1770]
[YOCTO #1722]
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
