How to Hide WP Google Fonts Admin Menus

function plt_hide_wp_google_fonts_menus() {
	//Hide "Google Fonts".
	remove_menu_page('google-fonts');
	//Hide "Google Fonts → Google Fonts".
	remove_submenu_page('google-fonts', 'google-fonts');
	//Hide "Google Fonts → Other Tools".
	remove_submenu_page('google-fonts', 'gf-plugin-other-tools');
	//Hide "Google Fonts → AppSumo".
	remove_submenu_page('google-fonts', 'gf_go_appsumo_pro');
}

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

Where do I put this code?