fix(topology): don't emit server closed event on network error

Author: mbroadst

lib/core/sdam/topology.js

@@ -930,13 +930,8 @@ function serverConnectEventHandler(server, topology) {
   };
 }
 
-function serverErrorEventHandler(server, topology) {
+function serverErrorEventHandler(server /*, topology */) {
   return function(err) {
-    topology.emit(
-      'serverClosed',
-      new monitoring.ServerClosedEvent(topology.s.id, server.description.address)
-    );
-
     if (isSDAMUnrecoverableError(err, server)) {
       resetServerState(server, err, { clearPool: true });
       return;