Remove dedicated unittest file for remb format

webrtc/modules/rtp_rtcp/source/rtcp_sender_unittest.cc

Index: webrtc/modules/rtp_rtcp/source/rtcp_sender_unittest.cc
diff --git a/webrtc/modules/rtp_rtcp/source/rtcp_sender_unittest.cc b/webrtc/modules/rtp_rtcp/source/rtcp_sender_unittest.cc
index ac7facea02f992712387c3068bdda37ac60ffdc6..4b257e598a1bede62bedf2239cac89ca42031773 100644
--- a/webrtc/modules/rtp_rtcp/source/rtcp_sender_unittest.cc
+++ b/webrtc/modules/rtp_rtcp/source/rtcp_sender_unittest.cc
@@ -531,6 +531,14 @@ TEST_F(RtcpSenderTest, SendNack) {
   EXPECT_THAT(parser()->nack()->packet_ids(), ElementsAre(0, 1, 16));
 }
 
+TEST_F(RtcpSenderTest, RembStatus) {
+  EXPECT_FALSE(rtcp_sender_->REMB());
+  rtcp_sender_->SetREMBStatus(true);
+  EXPECT_TRUE(rtcp_sender_->REMB());
+  rtcp_sender_->SetREMBStatus(false);
+  EXPECT_FALSE(rtcp_sender_->REMB());
+}
+
 TEST_F(RtcpSenderTest, SendRemb) {
   const uint64_t kBitrate = 261011;
   std::vector<uint32_t> ssrcs;