How to Hide Material Dashboard Admin Menus

function plt_hide_material_dashboard_menus() {
	//Hide "Dashboard".
	remove_menu_page('material-dashboard');
	//Hide "Dashboard → Dashboard".
	remove_submenu_page('material-dashboard', 'material-dashboard');
	//Hide "Dashboard → Settings".
	remove_submenu_page('material-dashboard', 'amd-settings');
	//Hide "Dashboard → Appearance".
	remove_submenu_page('material-dashboard', 'amd-appearance');
	//Hide "Dashboard → Menu settings".
	remove_submenu_page('material-dashboard', 'amd-menu');
	//Hide "Dashboard → Tools".
	remove_submenu_page('material-dashboard', 'amd-tools');
	//Hide "Dashboard → Manage data".
	remove_submenu_page('material-dashboard', 'amd-data');
	//Hide "Dashboard → Security".
	remove_submenu_page('material-dashboard', 'amd-security');
	//Hide "Dashboard → Wizard".
	remove_submenu_page('material-dashboard', 'amd-wizard');
	//Hide "Dashboard → Task manager".
	remove_submenu_page('material-dashboard', 'amd-tasks');
	//Hide "Dashboard → Extensions".
	remove_submenu_page('material-dashboard', 'amd-ext');
	//Hide "Dashboard → Themes".
	remove_submenu_page('material-dashboard', 'amd-themes');
	//Hide "Dashboard → Custom hooks".
	remove_submenu_page('material-dashboard', 'amd-hooks');
	//Hide "Dashboard → SMS webservices".
	remove_submenu_page('material-dashboard', 'amd-sms-webservices');
	//Hide "Dashboard → More".
	remove_submenu_page('material-dashboard', 'amd-more');
}

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

Where do I put this code?