Tests: Improvements to /post/query test class.

* Add `@group` annotation.
* Remove unnecessary `setUp()` method.

git-svn-id: https://develop.svn.wordpress.org/trunk@37224 602fd350-edb4-49c9-b593-d223f7449a82

tests/phpunit/tests/post/query.php

@@ -1,10 +1,10 @@
 <?php
 
+/**
+ * @group query
+ * @group post
+ */
 class Tests_Post_Query extends WP_UnitTestCase {
-	function setUp() {
-		parent::setUp();
-	}
-
 	/**
 	 * @group taxonomy
 	 */