Deprecate --gfe2_reloadable_flag_quic_distinguish_incoming_outgoing_streams.

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 3e51acfd46c19a1bc96039344450534c2afe4949..f3056231249de5a836a31bf38e5a7e9ac0c08e31 100644
--- a/net/quic/quic_flags.cc
+++ b/net/quic/quic_flags.cc
@@ -99,10 +99,6 @@ bool FLAGS_quic_require_fix = true;
 // If true, headers stream will support receiving PUSH_PROMISE frames.
 bool FLAGS_quic_supports_push_promise = false;
 
-// Enable counters for incoming/outgoing streams which are used as condition
-// check while creating a new stream.
-bool FLAGS_quic_distinguish_incoming_outgoing_streams = true;
-
 // If true, QUIC servers will attempt to validate a client's source
 // address token using the primary config, even if no server config id
 // is present in the client hello.