OEL-1650: Remove event registration field preprocess.

modules/oe_whitelabel_starter_event/oe_whitelabel_starter_event.module

@@ -123,16 +123,4 @@ function _oe_whitelabel_starter_event_preprocess_inpage_nav(array &$variables):
       'label' => $node->{$item['#field_name']}->getFieldDefinition()->getLabel(),
     ];
   }
-
-}
-
-/**
- * Implements hook_preprocess_HOOK().
- */
-function oe_whitelabel_starter_event_preprocess_field__node__oe_sc_event_registration_url(&$variables) {
-  foreach ($variables['items'] as &$item) {
-    if ($item['content']['#url']->isExternal()) {
-      $item['content']['attributes']['target'] = '_blank';
-    }
-  }
 }