Tips on Customizing Logo Carousel – Responsive Logo Slider Plugin for WordPress

How to Hide Logo Carousel Admin Menus

function plt_hide_logo_carousel_menus() {
	//Hide "Settings →".
	remove_submenu_page('options-general.php', 'lc-pro-features');

	//Hide "Logo Carousel".
	remove_menu_page('edit.php?post_type=logo-carousel');
	//Hide "Logo Carousel → Logo Carousel".
	remove_submenu_page('edit.php?post_type=logo-carousel', 'edit.php?post_type=logo-carousel');
	//Hide "Logo Carousel → Add New Logo".
	remove_submenu_page('edit.php?post_type=logo-carousel', 'post-new.php?post_type=logo-carousel');
}

add_action('admin_menu', 'plt_hide_logo_carousel_menus', 11);

Where do I put this code?

How to Hide the "Pro Version Features" Meta Box

function plt_hide_logo_carousel_metaboxes() {
	$screen = get_current_screen();
	if ( !$screen ) {
		return;
	}

	//Hide the "Pro Version Features" meta box.
	remove_meta_box('sp_lc_pro_version_features_meta_box', $screen->id, 'normal');
}

add_action('add_meta_boxes', 'plt_hide_logo_carousel_metaboxes', 20);