Manifest should not include notebook

[diehlbw]

Problem Summary

Our manifest ini tries to include example notebooks, with two problems: Most importantly, pip install doesn't put things like this in discoverable places (and the template builder has its own resources). Second, the line is out of synch with a rename of the directory

Recommended Solution

Validate that not including examples is the right way to go. Assuming yes, prune manifest.ini to remove the notebooks/ (also this would be appropriate for a skip changelog fix)