How to Hide WP CTA - Call Now Button, Sticky Button & Call to Action Builder Admin Menus

function plt_hide_easy_sticky_sidebar_menus() {
	//Hide "WP CTA".
	remove_menu_page('easy-sticky-sidebars');
	//Hide "WP CTA → WP CTA Dashboard".
	remove_submenu_page('easy-sticky-sidebars', 'easy-sticky-sidebars');
	//Hide "WP CTA → Add New".
	remove_submenu_page('easy-sticky-sidebars', 'add-easy-sticky-sidebar');
	//Hide "WP CTA → Import/Export".
	remove_submenu_page('easy-sticky-sidebars', 'easy-sticky-sidebar-import-export');
	//Hide "WP CTA → Settings".
	remove_submenu_page('easy-sticky-sidebars', 'easy-sticky-sidebar-settings');
	//Hide "WP CTA → How To Use".
	remove_submenu_page('easy-sticky-sidebars', 'how-to-use-wordpress-cta');
	//Hide "WP CTA → Edit CTA".
	remove_submenu_page('easy-sticky-sidebars', 'edit-easy-sticky-sidebar');
}

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

Where do I put this code?