Deprecate --gfe2_restart_flag_quic_tls_prefer_server_cipher_and_curve_list.

PiperOrigin-RevId: 361888281
Change-Id: I99a9b0f7c8fb9d2fbc512715d001c0ffdd92ace2
diff --git a/quic/core/crypto/tls_server_connection.cc b/quic/core/crypto/tls_server_connection.cc
index 2157778..0ed8fac 100644
--- a/quic/core/crypto/tls_server_connection.cc
+++ b/quic/core/crypto/tls_server_connection.cc
@@ -42,10 +42,7 @@
   }
   SSL_CTX_set_select_certificate_cb(
       ssl_ctx.get(), &TlsServerConnection::EarlySelectCertCallback);
-  if (GetQuicRestartFlag(quic_tls_prefer_server_cipher_and_curve_list)) {
-    QUIC_RESTART_FLAG_COUNT(quic_tls_prefer_server_cipher_and_curve_list);
-    SSL_CTX_set_options(ssl_ctx.get(), SSL_OP_CIPHER_SERVER_PREFERENCE);
-  }
+  SSL_CTX_set_options(ssl_ctx.get(), SSL_OP_CIPHER_SERVER_PREFERENCE);
   return ssl_ctx;
 }
 
diff --git a/quic/core/quic_flags_list.h b/quic/core/quic_flags_list.h
index d7df38f..d618902 100644
--- a/quic/core/quic_flags_list.h
+++ b/quic/core/quic_flags_list.h
@@ -78,5 +78,4 @@
 QUIC_FLAG(FLAGS_quic_restart_flag_quic_testonly_default_false, false)
 QUIC_FLAG(FLAGS_quic_restart_flag_quic_testonly_default_true, true)
 QUIC_FLAG(FLAGS_quic_restart_flag_quic_time_wait_list_support_multiple_cid_v2, true)
-QUIC_FLAG(FLAGS_quic_restart_flag_quic_tls_prefer_server_cipher_and_curve_list, true)
 QUIC_FLAG(FLAGS_quic_restart_flag_quic_use_reference_counted_sesssion_map, true)