Remove obsolete QUIC disabling code.

net/url_request/url_request_context_builder.cc

Index: net/url_request/url_request_context_builder.cc
diff --git a/net/url_request/url_request_context_builder.cc b/net/url_request/url_request_context_builder.cc
index 4f3c3a9cdf60c5f24d02822c7942841429962124..30c4badde0564fff77a5f8c4920c963ef416806c 100644
--- a/net/url_request/url_request_context_builder.cc
+++ b/net/url_request/url_request_context_builder.cc
@@ -427,10 +427,6 @@ std::unique_ptr<URLRequestContext> URLRequestContextBuilder::Build() {
       http_network_session_params_.quic_max_server_configs_stored_in_properties;
   network_session_params.quic_delay_tcp_race =
       http_network_session_params_.quic_delay_tcp_race;
-  network_session_params.quic_max_number_of_lossy_connections =
-      http_network_session_params_.quic_max_number_of_lossy_connections;
-  network_session_params.quic_packet_loss_threshold =
-      http_network_session_params_.quic_packet_loss_threshold;
   network_session_params.quic_idle_connection_timeout_seconds =
       http_network_session_params_.quic_idle_connection_timeout_seconds;
   network_session_params.quic_connection_options =