refactor: simplify invalid options notification processing

Author: pahan35

lib/operations/mongo_client_ops.js

@@ -593,10 +593,12 @@ function validOptions(options) {
       continue;
     }
 
-    if (_validOptions.indexOf(name) === -1 && options.validateOptions) {
-      return new MongoError(`option ${name} is not supported`);
-    } else if (_validOptions.indexOf(name) === -1) {
-      console.warn(`the options [${name}] is not supported`);
+    if (_validOptions.indexOf(name) === -1) {
+      if (options.validateOptions) {
+        return new MongoError(`option ${name} is not supported`);
+      } else {
+        console.warn(`the options [${name}] is not supported`);
+      }
     }
 
     if (legacyOptionNames.indexOf(name) !== -1) {