How to Hide Carbon Blocks Admin Menus

function plt_hide_carbon_blocks_menus() {
	//Hide the "Carbon Plugins" menu.
	remove_menu_page('carbon-plugins');
	//Hide the "Carbon Plugins → Carbon Plugins" menu.
	remove_submenu_page('carbon-plugins', 'carbon-plugins');
	//Hide the "Carbon Plugins → Carbon Blocks" menu.
	remove_submenu_page('carbon-plugins', 'carbon_blocks');
}

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

Where do I put this code?