Cleanups - delete unused functions in P2PTransportChannel.

Bug: None
Change-Id: I718925423b415f221dd99cd0086abcb618dfb93f
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/394800
Commit-Queue: Harald Alvestrand <hta@webrtc.org>
Reviewed-by: Tomas Gunnarsson <tommi@webrtc.org>
Auto-Submit: Harald Alvestrand <hta@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#44822}
diff --git a/p2p/base/p2p_transport_channel.h b/p2p/base/p2p_transport_channel.h
index f23018b0..d3c090d 100644
--- a/p2p/base/p2p_transport_channel.h
+++ b/p2p/base/p2p_transport_channel.h
@@ -129,9 +129,6 @@
   void SetIceParameters(const IceParameters& ice_params) override;
   void SetRemoteIceParameters(const IceParameters& ice_params) override;
   void SetRemoteIceMode(IceMode mode) override;
-  // TODO(deadbeef): Deprecated. Remove when Chromium's
-  // IceTransportChannel does not depend on this.
-  void Connect() {}
   void MaybeStartGathering() override;
   IceGatheringState gathering_state() const override;
   void ResolveHostnameCandidate(const Candidate& candidate);