Call.Content.MediaDescription: Rename RemoteCodecs to Codecs
Call.Content.MediaDescription: Rename RemoteCodecs to Codecs

Since the same property names are used in the answer, it does not make
sense to put the word Remote in there, since the property is also
used to describe the local codecs in this context.

freedesktop-unofficial-mirror/telepathy__telepathy-spec,TelepathyIM/telepathy-spec