可以在 RegisterController 当中直接 重写 register 方法:
public function register(Request $request)
{
$this->validator($request->all())->validate();
event(new Registered($user = $this->create($request->all())));
$this->guard()->login($user);// 去掉这一行就可以了
return $this->registered($request, $user)
?: redirect($this->redirectPath());
}