How to Hide Accessibility Widget by OneTap – Easy One-Click Accessibility Toolbar Admin Menus

function plt_hide_accessibility_onetap_menus() {
	//Hide "OneTap".
	remove_menu_page('accessibility-onetap-settings');
	//Hide "OneTap → Settings".
	remove_submenu_page('accessibility-onetap-settings', 'accessibility-onetap-settings');
	//Hide "OneTap → Modules".
	remove_submenu_page('accessibility-onetap-settings', 'accessibility-onetap-modules');
	//Hide "OneTap → Statement".
	remove_submenu_page('accessibility-onetap-settings', 'accessibility-onetap-accessibility-status');
	//Hide "OneTap → Get PRO".
	remove_submenu_page('accessibility-onetap-settings', 'accessibility-onetap-pro');
}

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

Where do I put this code?