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// remove wp version param from any enqueued scripts
function vc_remove_wp_ver_css_js( $src ) {

    if ( strpos( $src, 'ver=' . get_bloginfo( 'version' ) ) ){
        $src = remove_query_arg( 'ver', $src );
    }

    return $src;
}
add_filter( 'style_loader_src', 'vc_remove_wp_ver_css_js', 9999 );
add_filter( 'script_loader_src', 'vc_remove_wp_ver_css_js', 9999 );