Remove empty if statement

An empty if statement has been sitting here since the big bang,
occasionally causing lint presubmit flags. Remove the code.

gfe-relnote: Empty if statement, in effect a noop
PiperOrigin-RevId: 276680195
Change-Id: I971aab29f9cbf07c6ac3d8c616ff4b3c02d78a75

quic/tools/quic_server.cc

diff --git a/quic/tools/quic_server.cc b/quic/tools/quic_server.cc
index 294dbc5..04cc950 100644
--- a/quic/tools/quic_server.cc
+++ b/quic/tools/quic_server.cc
@@ -218,8 +218,6 @@
       event->out_ready_mask |= EPOLLOUT;
     }
   }
-  if (event->in_events & EPOLLERR) {
-  }
 }
 
 }  // namespace quic