Issue #2939336 by dsdeiz, quietone: D6 User Profile Source Fields

core/modules/user/src/Plugin/migrate/source/d6/User.php

@@ -33,14 +33,6 @@ public function fields() {
     // Add roles field.
     $fields['roles'] = $this->t('Roles');
 
-    // Profile fields.
-    if ($this->moduleExists('profile')) {
-      $fields += $this->select('profile_fields', 'pf')
-        ->fields('pf', ['name', 'title'])
-        ->execute()
-        ->fetchAllKeyed();
-    }
-
     return $fields;
   }