Partial Revert "ENH: infer freq in timedelta_range (#32377)"
closes #35897

maybe alternative to #36582 if no changes since #32377 now fail (not tested locally)

cc @phofl @jbrockmendel 
> maybe alternative to #36582 if no changes since #32377 now fail (not tested locally)

looks like maybe just a doctest added since.

the release note will need to explain that the enhancement has been reverted, so a proper fix maybe more preferable.

will leave this a draft for now. LGTM @simonjayhawkins yep looks good here too; if you can add a release note and merge master; ping on green (and you are in draft status) Hello @simonjayhawkins! Thanks for updating this PR. We checked the lines you've touched for [PEP 8](https://www.python.org/dev/peps/pep-0008) issues, and found:









There are currently no PEP 8 issues detected in this Pull Request. Cheers! :beers: 

##### Comment last updated at 2020-09-25 18:36:20 UTC ci restarted

```
=========================== short test summary info ===========================
FAILED pandas/tests/plotting/test_groupby.py::TestDataFrameGroupByPlots::test_series_groupby_plotting_nominally_works
= 1 failed, 75523 passed, 1809 skipped, 1165 xfailed, 67 warnings in 1223.71s (0:20:23) =
``` > @simonjayhawkins yep looks good here too; if you can add a release note and merge master; ping on green (and you are in draft status)

@jreback green 3rd time the charm, thanks @simonjayhawkins  @meeseeksdev backport 1.1.x