DEPR: Remove deprecated Timestamp.freq
- [ ] closes #xxxx (Replace xxxx with the GitHub issue number)
- [ ] [Tests added and passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#writing-tests) if fixing a bug or adding a new feature
- [ ] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#pre-commit).
- [ ] Added [type annotations](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#type-hints) to new arguments/methods/functions.
- [ ] Added an entry in the latest `doc/source/whatsnew/vX.X.X.rst` file if fixing a bug or adding a new feature.

Small nit here -  you are removing `freq`, not deprecating it, because it was already deprecated, right?  Might want to change the name of the PR?? > Might want to change the name of the PR??

This is the pattern we've stumbled into for deprecation-enforcement PRs. > > Might want to change the name of the PR??
> 
> This is the pattern we've stumbled into for deprecation-enforcement PRs.

For my own education, what's the pattern for a PR that deprecates as opposed to removal? > For my own education, what's the pattern for a PR that deprecates as opposed to removal?

The patterns are not distinct.  I'm open to suggestions. > > For my own education, what's the pattern for a PR that deprecates as opposed to removal?
> 
> The patterns are not distinct. I'm open to suggestions.

Maybe use "DEPR:  Deprecated foobar" when deprecating, and "DEPR: Remove deprecated foobar" to correspond to the deprecation and removal of the deprecated behavior of foobar, respectively. Updated the PR title. Also lately we have had a unofficial moratorium on merging deprecating functionality PRs until we've cleared the 1.x deprecations since the checklist issue is unfortunately not comprehensive. Thanks @jbrockmendel 