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<?php 
function awesome_acf_hide_acf_admin() {
		
    // get the current site url
    $site_url = get_bloginfo( 'url' );

    // an array of protected site urls  
    $protected_urls = array(
        'https://www.example.com',
        'http://staging.example.com'
    );

    // check if the current site url is in the protected urls array  
    if ( in_array( $site_url, $protected_urls ) ) {

        // hide the acf menu item 
        return false;
      
    } else {

        // show the acf menu item 
        return true;
      
    }
  
}

add_filter('acf/settings/show_admin', 'awesome_acf_hide_acf_admin');
?>