docs/qapidoc: remove unused intersperse function

This function has been unused since since commit
fd62bff901b (sphinx/qapidoc: Drop code to generate doc for simple
union tag).

Signed-off-by: John Snow <jsnow@redhat.com>
Message-ID: <20240626222128.406106-4-jsnow@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
[Commit message tweaked]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
1 file changed