Docs: remove v4 reference in homepage

Author: julien-deramond

site/layouts/partials/home/masthead.html

@@ -24,8 +24,6 @@ <h1 class="mb-3 fw-semibold lh-1">Build fast, responsive sites with&nbsp;Bootstr
         <span class="px-1">&middot;</span>
         <a href="/docs/{{ .Site.Params.docs_version }}/getting-started/download/" class="link-secondary">Download</a>
         <span class="px-1">&middot;</span>
-        <a href="https://getbootstrap.com/docs/4.6/getting-started/introduction/" class="link-secondary text-nowrap">v4.6.x docs</a>
-        <span class="px-1">&middot;</span>
         <a href="/docs/versions/" class="link-secondary text-nowrap">All releases</a>
       </p>
       {{ partial "ads" . }}