For consistency with other xfce apps move Catfish.appdata xml to /usr/share/metainfo
Catfish already installs it's appdata to /usr/share/metainfo. This change was introduced with the following commit: https://git.xfce.org/apps/catfish/commit/?id=0326549c5c083946499958e0526bb822df36ccb0
Turns out it was moved to appdata manually in our spec m( Sorry for the noise