How to Hide LinuxBCN Analytics for GoatCounter Admin Menus

function plt_hide_linuxbcn_analytics_for_goatcounter_menus() {
	//Hide the "Analytics" menu.
	remove_menu_page('goatcounter-wp');
	//Hide the "Analytics → Estadístiques" menu.
	remove_submenu_page('goatcounter-wp', 'goatcounter-wp');
	//Hide the "Analytics → Configuració" menu.
	remove_submenu_page('goatcounter-wp', 'goatcounter-wp-settings');
}

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

Where do I put this code?