How can I remove the code about highlight.js(V1)

[quicklearning123]

There is a firewall here, so I can't visit this link (cloudflare.com)
I just want remove the code about highlight.js like this:

    <link
      rel="stylesheet"
      href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/default.min.css"
    />

[slorber]

There is a "highlight.themeUrl" in v1 config: https://v1.docusaurus.io/docs/en/site-config#highlight