Update from https://crrev.com/306655

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 e73793386a519a5da4bcc8b7e699c49e1045c492..c9658c1a38e0b2e32a21576d62c566c1de6381c8 100644
--- a/net/quic/quic_flags.cc
+++ b/net/quic/quic_flags.cc
@@ -32,10 +32,6 @@ bool FLAGS_enable_quic_fec = false;
 // When true, defaults to BBR congestion control instead of Cubic.
 bool FLAGS_quic_use_bbr_congestion_control = false;
 
-// If true, the server will accept slightly more streams than the negotiated
-// limit.
-bool FLAGS_quic_allow_more_open_streams = false;
-
 // If true, QUIC will be more resilliant to junk packets with valid connection
 // IDs.
 bool FLAGS_quic_drop_junk_packets = true;