MDL-50314 mod_quiz: removed hardcoded export columns

* The columns 'institution', 'department' and 'email' are no longer
  automatically included in all quiz result exports.
* These columns can still be used, but have to be configured under
  'showuseridentity'.

mod/quiz/report/attemptsreport.php

@@ -202,25 +202,11 @@ protected function add_user_columns($table, &$columns, &$headers) {
             $headers[] = get_string('firstname');
         }
 
-        // When downloading, some extra fields are always displayed (because
-        // there's no space constraint) so do not include in extra-field list.
-        $extrafields = get_extra_user_fields($this->context,
-                $table->is_downloading() ? array('institution', 'department', 'email') : array());
+        $extrafields = get_extra_user_fields($this->context);
         foreach ($extrafields as $field) {
             $columns[] = $field;
             $headers[] = get_user_field_name($field);
         }
-
-        if ($table->is_downloading()) {
-            $columns[] = 'institution';
-            $headers[] = get_string('institution');
-
-            $columns[] = 'department';
-            $headers[] = get_string('department');
-
-            $columns[] = 'email';
-            $headers[] = get_string('email');
-        }
     }
 
     /**