Revert of Completed the functionalities of SrtpTransport.

pc/rtptransport.cc

Index: pc/rtptransport.cc
diff --git a/pc/rtptransport.cc b/pc/rtptransport.cc
index 78a2af5407ad6d5dbb5568905f0a981c0da766a6..2917911e9ee5b45571c9d5bfa525ad09a7260d06 100644
--- a/pc/rtptransport.cc
+++ b/pc/rtptransport.cc
@@ -76,18 +76,6 @@ bool RtpTransport::IsWritable(bool rtcp) const {
   return transport && transport->writable();
 }
 
-bool RtpTransport::SendRtpPacket(rtc::CopyOnWriteBuffer* packet,
-                                 const rtc::PacketOptions& options,
-                                 int flags) {
-  return SendPacket(false, packet, options, flags);
-}
-
-bool RtpTransport::SendRtcpPacket(rtc::CopyOnWriteBuffer* packet,
-                                  const rtc::PacketOptions& options,
-                                  int flags) {
-  return SendPacket(true, packet, options, flags);
-}
-
 bool RtpTransport::SendPacket(bool rtcp,
                               rtc::CopyOnWriteBuffer* packet,
                               const rtc::PacketOptions& options,