How to Hide the "LaStudio Kit" Admin Menu

function plt_hide_lastudio_element_kit_menus() {
	//Hide the "LaStudio Kit" menu.
	remove_menu_page('lastudio-kit-dashboard-settings-page');
}

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

Where do I put this code?