Fixed a bug in the uninstall script.

install/uninstall.php

@@ -32,7 +32,10 @@ require("/usr/local/ispconfig/server/lib/config.inc.php");
 require("/usr/local/ispconfig/server/lib/app.inc.php");
 
 // Delete the ISPConfig database
-$app->db->query("DROP DATABASE '".$conf["db_database"]."'");
+// $app->db->query("DROP DATABASE '".$conf["db_database"]."'");
+exec("/etc/init.d/mysql stop");
+exec("rm -rf /var/lib/mysql/".$conf["db_database"]);
+exec("/etc/init.d/mysql start");
 
 // Deleting the symlink in /var/www
 unlink("/var/www/ispconfig");