CLN: remove unused entries from _lite_rule_alias
xref #56346

remove unused entries `"min", "ms", "us", "ns"` from _lite_rule_alias
This pull request is stale because it has been open for thirty days with no activity. Please [update](https://pandas.pydata.org/pandas-docs/stable/development/contributing.html#updating-your-pull-request) and respond to this comment if you're still interested in working on this. I tried to do something similar in https://github.com/pandas-dev/pandas/pull/59240 - fancy taking a look please? > I tried to do something similar in #59240 - fancy taking a look please?

yeah, sure, I'll take a look.
 I got the same idea, to move  aliases "us", and"ns" from` _lite_rule_alias` to `c_PERIOD_AND_OFFSET_DEPR_FREQSTR`. 

seems like all tests passes except some tests in `pandas/tests/tseries/offsets/test_offsets.py`. closed as completed via #59240