You could bring in the routes that you want to use specifically into your routes/web.php instead of using the Auth::routes() method.
If the route is not defined, the access will not be available for any user.
Here are the list of routes that belong to a user Authenticating, Registering, Resetting Passwords, and Email Verfication.
// Authentication Routes...
$this->get('login', 'Auth\LoginController@showLoginForm')->name('login');
$this->post('login', 'Auth\LoginController@login');
$this->post('logout', 'Auth\LoginController@logout')->name('logout');
// Registration Routes...
$this->get('register', 'Auth\RegisterController@showRegistrationForm')->name('register');
$this->post('register', 'Auth\RegisterController@register');
// Password Reset Routes...
$this->get('password/reset', 'Auth\ForgotPasswordController@showLinkRequestForm')->name('password.request');
$this->post('password/email', 'Auth\ForgotPasswordController@sendResetLinkEmail')->name('password.email');
$this->get('password/reset/{token}', 'Auth\ResetPasswordController@showResetForm')->name('password.reset');
$this->post('password/reset', 'Auth\ResetPasswordController@reset')->name('password.update');
// Email Verification Routes...
$this->get('email/verify', 'Auth\VerificationController@show')->name('verification.notice');
$this->get('email/verify/{id}', 'Auth\VerificationController@verify')->name('verification.verify');
$this->get('email/resend', 'Auth\VerificationController@resend')->name('verification.resend');
You can find all of these routes defined within the /vendor/laravel/framework/src/Illuminate/Routing/Router.php file under the public auth method.
Keep in mind that Auth::routes() is just a convenient helper for generating the above list of routes, but not necessary.