Removed unused functions

src/League/OAuth2/Server/Storage/SessionInterface.php

@@ -48,13 +48,6 @@ interface SessionInterface
      */
     public function associateAccessToken($sessionId, $accessToken, $expireTime);
 
-    /**
-     * Remove an associated access token from a session
-     * @param  int    $sessionId   The session ID
-     * @return void
-     */
-    public function removeAccessToken($sessionId);
-
     /**
      * Associate a refresh token with a session
      * @param  int    $accessTokenId The access token ID