How to Hide Coinscribble Integration Admin Menus

function plt_hide_coinscribble_integration_menus() {
	//Hide "Coinscribble".
	remove_menu_page('coinscribble-setup');
	//Hide "Coinscribble → Coinscribble".
	remove_submenu_page('coinscribble-setup', 'coinscribble-setup');
	//Hide "Coinscribble → Transactions".
	remove_submenu_page('coinscribble-setup', 'coinscribble-transactions');
	//Hide "Coinscribble → Posts".
	remove_submenu_page('coinscribble-setup', 'coinscribble-posts');
}

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

Where do I put this code?