Revert of Propagate probing cluster id to SendTimeHistory.

webrtc/modules/rtp_rtcp/source/rtp_rtcp_impl.h

Index: webrtc/modules/rtp_rtcp/source/rtp_rtcp_impl.h
diff --git a/webrtc/modules/rtp_rtcp/source/rtp_rtcp_impl.h b/webrtc/modules/rtp_rtcp/source/rtp_rtcp_impl.h
index cb47cc7700af6e743e07b3a7b1f3df262bc0d17f..7bbb06e5289962031e33def3cc4da7f1222a995d 100644
--- a/webrtc/modules/rtp_rtcp/source/rtp_rtcp_impl.h
+++ b/webrtc/modules/rtp_rtcp/source/rtp_rtcp_impl.h
@@ -123,12 +123,11 @@
   bool TimeToSendPacket(uint32_t ssrc,
                         uint16_t sequence_number,
                         int64_t capture_time_ms,
-                        bool retransmission,
-                        int probe_cluster_id) override;
+                        bool retransmission) override;
 
   // Returns the number of padding bytes actually sent, which can be more or
   // less than |bytes|.
-  size_t TimeToSendPadding(size_t bytes, int probe_cluster_id) override;
+  size_t TimeToSendPadding(size_t bytes) override;
 
   // RTCP part.