conference: remove no longer necessary dead code
conference: remove no longer necessary dead code

Tuleap: #12
Change-Id: Ib98f501057cde92945e1f60f79004387ed756666
savoirfairelinux/ring-lrc,savoirfairelinux/ring-lrc,savoirfairelinux/ring-lrc,savoirfairelinux/ring-lrc,savoirfairelinux/ring-lrc