Removed isExpired() from interfaces and traits

src/Entities/RefreshTokenEntityInterface.php

@@ -52,11 +52,4 @@ interface RefreshTokenEntityInterface
      * @return \League\OAuth2\Server\Entities\AccessTokenEntityInterface
      */
     public function getAccessToken();
-
-    /**
-     * Has the token expired?
-     *
-     * @return bool
-     */
-    public function isExpired();
 }