gettext-tools.recipe: Remove unnecessary dependencies on Windows
gettext-tools.recipe: Remove unnecessary dependencies on Windows

mingw-runtime is already implicitly added, automake is already in the
deps list.

nirbheek/cerbero,GStreamer/cerbero,GStreamer/cerbero,nirbheek/cerbero,GStreamer/cerbero,GStreamer/cerbero,nirbheek/cerbero,nirbheek/cerbero,GStreamer/cerbero