gmp.recipe: Remove libgmp.lib, it's unusable
gmp.recipe: Remove libgmp.lib, it's unusable

It's generated by the build system and it's unusable. We generate
gmp.lib ourselves anyway.

libgmp.lib : fatal error LNK1107: invalid or corrupt file: cannot read at 0x480

nirbheek/cerbero,centricular/cerbero,GStreamer/cerbero,atsushieno/cerbero,atsushieno/cerbero,fluendo/cerbero,GStreamer/cerbero,centricular/cerbero,nirbheek/cerbero,nirbheek/cerbero,GStreamer/cerbero,centricular/cerbero,centricular/cerbero,nirbheek/cerbero,fluendo/cerbero,fluendo/cerbero,centricular/cerbero,fluendo/cerbero,fluendo/cerbero,atsushieno/cerbero,atsushieno/cerbero,atsushieno/cerbero,GStreamer/cerbero,GStreamer/cerbero