Revert "Replace ancient pinned Mozilla version of Flask-pyoidc lib"
Revert "Replace ancient pinned Mozilla version of Flask-pyoidc lib"

This reverts commit c055b249f18a8d2e53c423bb09e6fb73b9c773c1.

mozilla/pulseguardian,mozilla/pulseguardian,mozilla/pulseguardian,mozilla/pulseguardian