Deprecate FLAG_require_strike_register_or_server_nonce

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 04cda181e3556e584b211c82e21c9c22d85dec0b..68b5f647283bd9f6acd4fba5f96efb0dd2b3fff0 100644
--- a/net/quic/quic_flags.cc
+++ b/net/quic/quic_flags.cc
@@ -89,10 +89,6 @@ bool FLAGS_quic_supports_push_promise = false;
 // If true, QUIC will support RFC 7539 variants of ChaCha20 Poly1305.
 bool FLAGS_quic_use_rfc7539 = true;
 
-// If true, require QUIC connections to use a valid server nonce or a non-local
-// strike register.
-bool FLAGS_require_strike_register_or_server_nonce = true;
-
 // When turn on, log packet loss into transport connection stats LossEvent.
 bool FLAGS_quic_log_loss_event = true;