Deprecate FLAGS_quic_always_write_queued_retransmissions.

net/quic/quic_multipath_sent_packet_manager.cc

Index: net/quic/quic_multipath_sent_packet_manager.cc
diff --git a/net/quic/quic_multipath_sent_packet_manager.cc b/net/quic/quic_multipath_sent_packet_manager.cc
index 0e5e296d80592abdb99831846a50de1972ee35e6..6268f9216e4ac7a6b98e9e69cd2bb1f702a6b5f8 100644
--- a/net/quic/quic_multipath_sent_packet_manager.cc
+++ b/net/quic/quic_multipath_sent_packet_manager.cc
@@ -84,24 +84,6 @@ void QuicMultipathSentPacketManager::OnIncomingAck(
       ack_frame, ack_receive_time);
 }
 
-bool QuicMultipathSentPacketManager::IsUnacked(
-    QuicPathId path_id,
-    QuicPacketNumber packet_number) const {
-  QuicSentPacketManagerInterface* path_manager =
-      MaybeGetSentPacketManagerForPath(path_id);
-  return path_manager != nullptr &&
-         path_manager->IsUnacked(path_id, packet_number);
-}
-
-bool QuicMultipathSentPacketManager::HasRetransmittableFrames(
-    QuicPathId path_id,
-    QuicPacketNumber packet_number) const {
-  QuicSentPacketManagerInterface* path_manager =
-      MaybeGetSentPacketManagerForPath(path_id);
-  return path_manager != nullptr &&
-         path_manager->HasRetransmittableFrames(path_id, packet_number);
-}
-
 void QuicMultipathSentPacketManager::RetransmitUnackedPackets(
     TransmissionType retransmission_type) {
   QuicSentPacketManagerInterface* path_manager =