How to Hide MaxButtons Admin Menus

function plt_hide_maxbuttons_menus() {
	//Hide "MaxButtons".
	remove_menu_page('maxbuttons-controller');
	//Hide "MaxButtons → Buttons".
	remove_submenu_page('maxbuttons-controller', 'maxbuttons-controller');
	//Hide "MaxButtons → Add New".
	remove_submenu_page('maxbuttons-controller', 'maxbuttons-controller&action=edit');
	//Hide "MaxButtons → Upgrade to Pro".
	remove_submenu_page('maxbuttons-controller', 'maxbuttons-pro');
	//Hide "MaxButtons → Settings".
	remove_submenu_page('maxbuttons-controller', 'maxbuttons-settings');
	//Hide "MaxButtons → Support".
	remove_submenu_page('maxbuttons-controller', 'maxbuttons-support');
	//Hide "MaxButtons → Share Buttons".
	remove_submenu_page('maxbuttons-controller', 'social-share');
}

add_action('admin_menu', 'plt_hide_maxbuttons_menus', 11);
Where do I put this code?