Wp-admin super slow - by fan - on WordPress WooCommerce support

about the admin-ajaxphp-issue

could I add the fix code to global CSS not in theme function.php ?

<?php
/**
* Optimize WooCommerce Scripts
* Remove WooCommerce Generator tag, styles, and scripts from non WooCommerce pages.
*/
add_action( ‘wp_enqueue_scripts’, ‘child_manage_woocommerce_styles’, 99 );

function child_manage_woocommerce_styles() {
//remove generator meta tag
remove_action( ‘wp_head’, array( $GLOBALS[‘woocommerce’], ‘generator’ ) );

//first check that woo exists to prevent fatal errors
if ( function_exists( ‘is_woocommerce’ ) ) {
//dequeue scripts and styles
if ( ! is_woocommerce() && ! is_cart() && ! is_checkout() ) {
wp_dequeue_style( ‘woocommerce_frontend_styles’ );
wp_dequeue_style( ‘woocommerce_fancybox_styles’ );
wp_dequeue_style( ‘woocommerce_chosen_styles’ );
wp_dequeue_style( ‘woocommerce_prettyPhoto_css’ );
wp_dequeue_script( ‘wc_price_slider’ );
wp_dequeue_script( ‘wc-single-product’ );
wp_dequeue_script( ‘wc-add-to-cart’ );
wp_dequeue_script( ‘wc-cart-fragments’ );
wp_dequeue_script( ‘wc-checkout’ );
wp_dequeue_script( ‘wc-add-to-cart-variation’ );
wp_dequeue_script( ‘wc-single-product’ );
wp_dequeue_script( ‘wc-cart’ );
wp_dequeue_script( ‘wc-chosen’ );
wp_dequeue_script( ‘woocommerce’ );
wp_dequeue_script( ‘prettyPhoto’ );
wp_dequeue_script( ‘prettyPhoto-init’ );
wp_dequeue_script( ‘jquery-blockui’ );
wp_dequeue_script( ‘jquery-placeholder’ );
wp_dequeue_script( ‘fancybox’ );
wp_dequeue_script( ‘jqueryui’ );
}
}

}