edge: remove typ endOfCandidates hack
edge: remove typ endOfCandidates hack

this removes the endOfCandidates hack. The samples will be updated
to simply pass every event.candidate (including undefined) to the
other addIceCandidate which removes the need for this.

xdumaine/adapter,jan-ivar/adapter,webrtc/adapter,webrtc/adapter,Acidburn0zzz/adapter,Acidburn0zzz/adapter,Acidburn0zzz/adapter,xdumaine/adapter,jan-ivar/adapter