Remove try catch in backup step, to let it show up on the error page

classes/local/manager/backup_manager.php

@@ -45,7 +45,6 @@ class backup_manager {
      */
     public static function create_course_backup($courseid) {
         global $CFG, $DB;
-        try {
         $course = get_course($courseid);
         $record = new \stdClass();
         $record->courseid = $courseid;
@@ -91,11 +90,6 @@ class backup_manager {
         $DB->update_record('tool_lifecycle_backups', $record, true);
 
         return true;
-        } catch (\moodle_exception $e) {
-            debugging('There was a problem during backup!');
-            debugging($e->getMessage());
-            return false;
-        }
     }
 
     /**