Minor - Removing double query call

main/inc/lib/attendance.lib.php

@@ -44,7 +44,6 @@ class Attendance
 		$sql = "SELECT COUNT(att.id) AS total_number_of_items FROM $tbl_attendance att
 		        WHERE c_id = $course_id AND att.active = 1 $condition_session ";
 		$res = Database::query($sql);
-		$res = Database::query($sql);
 		$obj = Database::fetch_object($res);
 		return $obj->total_number_of_items;
 	}