Revert "Fix the "Failed unprotect audio RTP packet" error when SCTP is bundled with audio."

This reverts commit 56631a14bdae24aa0bfaceeb2b57df729fee1227.

TBR=henrike@webrtc.org
BUG=3235

Review URL: https://webrtc-codereview.appspot.com/19669004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@6363 4adac7df-926f-26a2-2b94-8c16560cd09d

talk/media/base/rtputils.cc

@@ -223,15 +223,4 @@ bool SetRtpHeader(void* data, size_t len, const RtpHeader& header) {
           SetRtpSsrc(data, len, header.ssrc));
 }
 
-bool IsRtpPacket(const void* data, size_t len) {
-  if (len < kMinRtpPacketLen)
-    return false;
-
-  int version = 0;
-  if (!GetRtpVersion(data, len, &version))
-    return false;
-
-  return version == kRtpVersion;
-}
-
 }  // namespace cricket

talk/media/base/rtputils.h

@@ -74,7 +74,6 @@ bool SetRtpSsrc(void* data, size_t len, uint32 value);
 // Assumes version 2, no padding, no extensions, no csrcs.
 bool SetRtpHeader(void* data, size_t len, const RtpHeader& header);
 
-bool IsRtpPacket(const void* data, size_t len);
 }  // namespace cricket
 
 #endif  // TALK_MEDIA_BASE_RTPUTILS_H_