How to Hide Everest Forms Admin Menus

function plt_hide_everest_forms_menus() {
	//Hide "Everest Forms".
	remove_menu_page('everest-forms');
	//Hide "Everest Forms → Dashboard".
	remove_submenu_page('everest-forms', 'evf-dashboard');
	//Hide "Everest Forms → All Forms".
	remove_submenu_page('everest-forms', 'evf-builder');
	//Hide "Everest Forms → Add New".
	remove_submenu_page('everest-forms', 'evf-builder&create-form=1');
	//Hide "Everest Forms → Entries".
	remove_submenu_page('everest-forms', 'evf-entries');
	//Hide "Everest Forms → Settings".
	remove_submenu_page('everest-forms', 'evf-settings');
	//Hide "Everest Forms → Tools".
	remove_submenu_page('everest-forms', 'evf-tools');
	//Hide "Everest Forms → SMTP".
	remove_submenu_page('everest-forms', 'evf-smart-smtp');
	//Hide "Everest Forms → Add-ons".
	remove_submenu_page('everest-forms', 'http://127.0.0.1/wp-admin/admin.php?page=evf-dashboard#/features');
	//Hide "Everest Forms → Upgrade to Pro".
	remove_submenu_page('everest-forms', 'https://everestforms.net/pricing/?utm_source=evf-upgrade-to-pro-submenu&utm_medium=upgrade-link&utm_campaign=lite-version');
}

add_action('admin_menu', 'plt_hide_everest_forms_menus', 81);
Where do I put this code?