Revert of Pick the DTLS handshake timeout based on the ICE RTT estimate

webrtc/base/sslstreamadapter.h

Index: webrtc/base/sslstreamadapter.h
diff --git a/webrtc/base/sslstreamadapter.h b/webrtc/base/sslstreamadapter.h
index e4df77436c143eb3d58079f0559317b7f54e2fa8..4f5ee02fe44343fb7028e5f9ca354a371ff50d9d 100644
--- a/webrtc/base/sslstreamadapter.h
+++ b/webrtc/base/sslstreamadapter.h
@@ -155,12 +155,6 @@
   // If requested version is not supported by underlying crypto library, the
   // next lower will be used.
   virtual void SetMaxProtocolVersion(SSLProtocolVersion version) = 0;
-
-  // Set the initial retransmission timeout for DTLS messages. When the timeout
-  // expires, the message gets retransmitted and the timeout is exponentially
-  // increased.
-  // This should only be called before StartSSL().
-  virtual void SetInitialRetransmissionTimeout(int timeout_ms) = 0;
 
   // StartSSL starts negotiation with a peer, whose certificate is verified
   // using the certificate digest. Generally, SetIdentity() and possibly