Remove duplicate test

test/unit/helper/types.js

@@ -3,19 +3,6 @@ var types = require('../../../helper/types');
 module.exports.tests = {};
 
 module.exports.tests.no_cleaned_types = function(test, common) {
-  test('no cleaned types', function(t) {
-    try {
-      types();
-      t.fail('exception should be thrown');
-    }
-    catch (err) {
-      t.equal(err.message, 'clean_types should not be null or undefined', 'no input should result in exception');
-    }
-    finally {
-      t.end();
-    }
-  });
-
   test('no cleaned types', function(t) {
     try {
       types({});