Proposal: Remove profile breadcrumb

Problem

When a user has a README file visible in their profile, a set of anchors appear above the content. These are styled as breadcrumbs, but don't make use of the GlBreadcrumb. The separator (>) is included in a span and also the slash (/) separator in an :after pseudo element, but the latest breadcrumb update, which the last item uses styles from, uses a :before pseudo element. So there are three separators here, but only the last slash is correct.

The breadcrumb component should exist at the top of the page (which there is an instance of here) and function as navigation.

Proposal

• Remove the anchor links styled as breadcrumbs and consider replacing with a single link to the README in the repo.
• Keep GlBreadcrumb at the top (currently only displays name).