Hello Everyone, I am here to teach you how to remove parent theme menu in child theme wordpress.

The below code is in your parent theme for register the menu.

add_action( 'after_setup_theme', 'register_themename_menu' );

function register_themename_menu() {
    register_nav_menu( 'primary', __( 'Primary Navigation ) );
}

If you want to remove the parent theme menu using unregister_nav_menu() function. This function takes one parameter, the menu location identifier slug used in the register_nav_menu() function. For this you just copied below code and paste into child theme functions.php file

function remove_parent_theme_features() {
    unregister_nav_menu( 'primary' );
}

I hope it help you. Thank-you readers!