How to Hide weForms Admin Menus

function plt_hide_weforms_menus() {
	//Hide "weForms".
	remove_menu_page('weforms');
	//Hide "weForms → All Forms".
	remove_submenu_page('weforms', 'admin.php?page=weforms#/');
	//Hide "weForms → Entries".
	remove_submenu_page('weforms', 'admin.php?page=weforms#/entries');
	//Hide "weForms → Tools".
	remove_submenu_page('weforms', 'admin.php?page=weforms#/tools');
	//Hide "weForms → Premium".
	remove_submenu_page('weforms', 'admin.php?page=weforms#/premium');
	//Hide "weForms → Help".
	remove_submenu_page('weforms', 'admin.php?page=weforms#/help');
	//Hide "weForms → Settings".
	remove_submenu_page('weforms', 'admin.php?page=weforms#/settings');
}

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

Where do I put this code?