Deprecate quic_always_has_unacked_packets_on_timeout

net/quic/quic_flags.cc

Index: net/quic/quic_flags.cc
diff --git a/net/quic/quic_flags.cc b/net/quic/quic_flags.cc
index f2f7bcd6725d3a29ab9b316d59c470effd06c273..a8e7e857782f33c07dc4d7405de9eb6a430820ef 100644
--- a/net/quic/quic_flags.cc
+++ b/net/quic/quic_flags.cc
@@ -102,9 +102,6 @@ bool FLAGS_quic_sslr_limit_reduction = true;
 // Simplify QUIC's loss detection by combining time and nack based portions.
 bool FLAGS_quic_simplify_loss_detection = true;
 
-// If true, do not check HasUnackedPackets on retransmission timeout.
-bool FLAGS_quic_always_has_unacked_packets_on_timeout = true;
-
 // If true, respect any configured max pacing rate.
 bool FLAGS_quic_max_pacing_rate = true;