js_inserted isn't used

Author: Will Morgan

code/GoogleMapField.php

@@ -34,11 +34,6 @@ class GoogleMapField extends FormField {
 	 */
 	protected $options = array();
 
-	/**
-	 * @var boolean
-	 */
-	static protected $js_inserted = false;
-
 	/**
 	 * @param DataObject $data The controlling dataobject
 	 * @param string $title The title of the field