Code declared in interface, not needed

src/Grant/AbstractGrant.php

@@ -185,22 +185,4 @@ abstract class AbstractGrant implements GrantTypeInterface
 
         return $scopes;
     }
-
-    /**
-     * Complete the grant flow
-     *
-     * Example response:
-     * <pre>
-     *  array(
-     *      'access_token'  =>  (string) ,   // The access token
-     *      'refresh_token' =>  (string) ,   // The refresh token (only set if the refresh token grant is enabled)
-     *      'token_type'    =>  'bearer',   // Almost always "bearer" (exceptions: JWT, SAML)
-     *      'expires'       =>  (int) ,      // The timestamp of when the access token will expire
-     *      'expires_in'    =>  (int) // The number of seconds before the access token will expire
-     *  )
-     * </pre>
-     *
-     * @return array An array of parameters to be passed back to the client
-     */
-    abstract public function completeFlow();
 }