Remove section on archive label for repositories (#1343)

With sourcegraph/sourcegraph#7158 we now support
Bitbucket Server's own archived repositories, so this label workaround
is no longer relevant.

Author: pjlast

docs/admin/code_hosts/bitbucket_server.mdx

@@ -191,10 +191,6 @@ Bitbucket Server / Bitbucket Data Center versions older than v5.5 require specif
 
 Sourcegraph by default clones repositories from your Bitbucket Server / Bitbucket Data Center via HTTP(S), using the access token or account credentials you provide in the configuration. The [`username`](/admin/code_hosts/bitbucket_server#configuration) field is always used when cloning, so it is required.
 
-## Repository labels
-
-Sourcegraph will mark repositories as archived if they have the `archived` label on Bitbucket Server / Bitbucket Data Center. You can exclude these repositories in search with `archived:no` [search syntax](/code-search/queries).
-
 ## Internal rate limits
 
 See [Internal rate limits](/admin/code_hosts/rate_limits#internal-rate-limits).