Remove region of commented code

The comment suggests that the export mechanism does not work due to an
unreadable file which is why this code is commented. This needs to be
fixed. In the meantime, remove the comment.

Author: dlmsr

renderer.php

@@ -581,7 +581,7 @@ public function publish_allocation_group($ratingallocateid, $coursemoduleid, $st
     }
 
     /**
-     * Output the ratingallocate modfify allocation
+     * Output the ratingallocate modify allocation
      */
     public function reports_group($ratingallocateid, $coursemoduleid, $status, $context, $action = '') {
         $output = '';
@@ -598,15 +598,6 @@ public function reports_group($ratingallocateid, $coursemoduleid, $status, $cont
             $action
         );
 
-        /* TODO: File not readable
-        $output .= html_writer::empty_tag('br', []);
-
-        if (has_capability('mod/ratingallocate:export_ratings', $context)) {
-            $output .= $this->action_link(new moodle_url(
-                '/mod/ratingallocate/solver/export_lp_solve.php', ['id' => $coursemoduleid,
-                'ratingallocateid' => $ratingallocateid]), get_string('download_problem_mps_format', RATINGALLOCATE_MOD_NAME));
-        }*/
-
         $output .= $this->box_end();
         return $output;
     }