How to Hide Seraphinite Accelerator (Base, cache only) Admin Menus

function plt_hide_seraphinite_accelerator_menus() {
	//Hide the "Accelerator" menu.
	remove_menu_page('seraph_accel_manage');
	//Hide the "Accelerator → Manager" menu.
	remove_submenu_page('seraph_accel_manage', 'seraph_accel_manage');
	//Hide the "Accelerator → Settings" menu.
	remove_submenu_page('seraph_accel_manage', 'seraph_accel_settings');
}

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

Where do I put this code?