fix(tests): incorrect test (should use existing result)

Since `readFileSync` is only stubbed `onFirstCall` we get a different answer
the second time around which is probably Not What You Want.  But also we
*already checked that config = false*.  So you could just remove this
test, it does nothing useful.

test/node-unit/cli/options.spec.js

@@ -318,7 +318,7 @@ describe('options', function () {
           });
 
           it('should set config = false', function () {
-            expect(loadOptions(), 'to have property', 'config', false);
+            expect(result, 'to have property', 'config', false);
           });
         });