Remove hostname from a log statement

Bug: 977441
Change-Id: Ic73acbb0ac0a30736c960e8e9dec813c172e8d0a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1695812
Commit-Queue: Eric Orth <ericorth@chromium.org>
Commit-Queue: Asanka Herath <asanka@chromium.org>
Reviewed-by: Asanka Herath <asanka@chromium.org>
Auto-Submit: Eric Orth <ericorth@chromium.org>
Cr-Commit-Position: refs/heads/master@{#676194}

net/http/http_network_transaction.cc

@@ -399,9 +399,6 @@ int HttpNetworkTransaction::Read(IOBuffer* buf,
     DCHECK(proxy_info_.is_http() || proxy_info_.is_https() ||
            proxy_info_.is_quic());
     DCHECK_EQ(headers->response_code(), HTTP_PROXY_AUTHENTICATION_REQUIRED);
-    LOG(WARNING) << "Blocked proxy response with status "
-                 << headers->response_code() << " to CONNECT request for "
-                 << GetHostAndPort(url_) << ".";
     return ERR_TUNNEL_CONNECTION_FAILED;
   }