After [34577] (not because of), uncover and fix some horrifying anomalies in Tests_Multisite_Site.

git-svn-id: https://develop.svn.wordpress.org/trunk@34601 602fd350-edb4-49c9-b593-d223f7449a82

tests/phpunit/tests/xmlrpc/wp/uploadFile.php

@@ -5,6 +5,12 @@
  */
 class Tests_XMLRPC_wp_uploadFile extends WP_XMLRPC_UnitTestCase {
 
+	public function tearDown() {
+		$this->remove_added_uploads();
+
+		parent::tearDown();
+	}
+
 	function test_valid_attachment() {
 		$this->make_user_by_role( 'editor' );