Remove global logging configuration override

This reverts commit 2a9a26a0d4b0c6814f584c705ad1bddff186bec7, which added a global logging configuration override. Its result was that in local development (when `DEBUG = True`) the logs would fill up with DEBUG prints from all over the place.

I can't see why this was a logical fix, even for the authors original intent. I propose to remove this.