chore: remove unused import

Author: Pol Torrent i Soler

classes/MoodleConfiguration.class.php

@@ -14,8 +14,6 @@
 // You should have received a copy of the GNU General Public License
 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
-use core_reportbuilder\external\columns\sort\get;
-
 defined('MOODLE_INTERNAL') || die();
 
 require_once(dirname(__FILE__) . '/../quizzes/lib/com/wiris/quizzes/api/Configuration.interface.php');