We don't need to check for libOggFLAC with FLAC 1.1.3
because FLAC 1.1.3 can be recompiled to enable/disable
OggFLAC support without recompiling mpd.

git-svn-id: https://svn.musicpd.org/mpd/trunk@5255 09075e82-0dd4-0310-85a5-a0d7c8717e4f