Remove the unused `receive_timestamp` arg to NetEq::InsertPacket

The implementation just ignores the provided timestamp, and gets the
time from the current clock instead.

Bug: webrtc:11028
Change-Id: I7a1fee36bef862c68d8f15fd19ee53b2bbb25892
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/156164
Commit-Queue: Karl Wiberg <kwiberg@webrtc.org>
Reviewed-by: Ivo Creusen <ivoc@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#29434}
diff --git a/modules/audio_coding/neteq/neteq_impl.cc b/modules/audio_coding/neteq/neteq_impl.cc
index f1245cc..751fc45 100644
--- a/modules/audio_coding/neteq/neteq_impl.cc
+++ b/modules/audio_coding/neteq/neteq_impl.cc
@@ -151,12 +151,11 @@
 NetEqImpl::~NetEqImpl() = default;
 
 int NetEqImpl::InsertPacket(const RTPHeader& rtp_header,
-                            rtc::ArrayView<const uint8_t> payload,
-                            uint32_t receive_timestamp) {
+                            rtc::ArrayView<const uint8_t> payload) {
   rtc::MsanCheckInitialized(payload);
   TRACE_EVENT0("webrtc", "NetEqImpl::InsertPacket");
   rtc::CritScope lock(&crit_sect_);
-  if (InsertPacketInternal(rtp_header, payload, receive_timestamp) != 0) {
+  if (InsertPacketInternal(rtp_header, payload) != 0) {
     return kFail;
   }
   return kOK;
@@ -473,8 +472,7 @@
 // Methods below this line are private.
 
 int NetEqImpl::InsertPacketInternal(const RTPHeader& rtp_header,
-                                    rtc::ArrayView<const uint8_t> payload,
-                                    uint32_t receive_timestamp) {
+                                    rtc::ArrayView<const uint8_t> payload) {
   if (payload.empty()) {
     RTC_LOG_F(LS_ERROR) << "payload is empty";
     return kInvalidPointer;