Update G Unit Test & Fix on G::emailAddress() function

- imcomplete comment exist on G Test file
- reoving a G::pr on G::emailAddress() function

tests/unit/gulliver/system/GTest.php

@@ -1406,7 +1406,10 @@ class GTest extends PHPUnit_Framework_TestCase
      */
     public function testSendMail()
     {
-         need email
+        // Remove the following lines when you implement this test.
+        $this->markTestIncomplete(
+          'This test has not been implemented yet.'
+        );
     }
 
     /**