[arch-dev-public] Removing gimp-devel from [extra]

Hi, I would like to move gimp-devel to AUR. At the moment, I'm the maintainer of gimp and gimp-devel, but I don't see any reason for the devel package in our repository. These are not the development files for gimp, it's the next devel branch for the next version (just for clarification). I will move it tomorrow, if no objections appears. Daniel