refactor: simplify resetServerState since reset is synchronous now

Author: mbroadst

lib/core/sdam/topology.js

@@ -971,21 +971,16 @@ function executeWriteOperation(args, options, callback) {
 function resetServerState(server, error, options) {
   options = Object.assign({}, { clearPool: false }, options);
 
-  function resetState() {
-    server.emit(
-      'descriptionReceived',
-      new ServerDescription(server.description.address, null, { error })
-    );
-
-    process.nextTick(() => server.requestCheck());
-  }
-
   if (options.clearPool && server.s.pool) {
-    server.s.pool.reset(() => resetState());
-    return;
+    server.s.pool.clear();
   }
 
-  resetState();
+  server.emit(
+    'descriptionReceived',
+    new ServerDescription(server.description.address, null, { error })
+  );
+
+  process.nextTick(() => server.requestCheck());
 }
 
 function translateReadPreference(options) {