Revert "Move all subs methods to Session.request, models.Request, and Paged"
Revert "Move all subs methods to Session.request, models.Request, and Paged"

This reverts commit 57b4f63220a6f780ebd9df7eb61ad1f9fc6b351d.

planetlabs/planet-client-python,planetlabs/planet-client-python