osmo-mgw: Remove osmo-bsc_mgcp and libosmo-legacy-mgcp

Since osmo-mgw.git 31b4729f2731c747b8b33c4646dd5ade2ace29bc those have
been removed entirely from the repo and are only available trhough
openbsc.git.

Change-Id: If07c4af918304db7611f21cd203e4e4670616cf1
1 file changed