Update install_fusionpbx.php (#3021)

Fix so install works with MySQL.

core/install/resources/classes/install_fusionpbx.php

@@ -545,7 +545,7 @@ include "root.php";
 			//add the database structure
 				require_once "resources/classes/schema.php";
 				$schema = new schema;
-				//echo $schema->schema();
+				echo $schema->schema();
 
 			//add the defaults data into the database
 				//get the contents of the sql file