Remove AbstractRecord::getTabConfiguration.

- Deprecated since release 3.1.

module/VuFind/src/VuFind/Controller/AbstractRecord.php

@@ -638,18 +638,6 @@ class AbstractRecord extends AbstractBase
         return $this->redirect()->toUrl($target . $params);
     }
 
-    /**
-     * Alias to getRecordTabConfig for backward compatibility.
-     *
-     * @deprecated use getRecordTabConfig instead
-     *
-     * @return array
-     */
-    protected function getTabConfiguration()
-    {
-        return $this->getRecordTabConfig();
-    }
-
     /**
      * Support method to load tab information from the RecordTab PluginManager.
      *