chart: Remove unused Traefik middleware

Apparently, while copying the contents of the old aptly-repository over to here, I accidentally included this middleware file that was sticking around in my local copy from back when we were deciding how exactly to set up authentication. The original idea was that we'd use oathkeeper as a decision maker only, rather than a proxy as it is now, but this was changed in order to avoid dealing with CRDs.

Of course, this file got stuck in here, which spoiled that goal just a tiny bit. In fact, I literally reviewed changes to it in !13 (merged) that were explicitly tied to the exact CRD issues we wanted to avoid in the first place.

https://phabricator.apertis.org/T10135

Signed-off-by: Ryan Gonzalez ryan.gonzalez@collabora.com