Deprecate the import of some element classes in sage/ring/all.py #33602
Description
This tickets aims to remove some element classes from the global namespace. Example:
sage: PowerSeries?
Docstring:
A power series. Base class of univariate and multivariate power
series. The following methods are available with both types of
objects.
Init docstring:
Initialize a power series. Not for public use. It gets called by
the "PowerSeries_poly" and "MPowerSeries" constructors.
[...]
CC: @tscrim
Component: refactoring
Author: David Ayotte
Branch/Commit: 10be916
Reviewer: Travis Scrimshaw
Issue created by migration from https://trac.sagemath.org/ticket/33602