Removed `axis` argument from Datetime/Timedelta/Period Index min, ar…
…gmin, max, argmax

- [x] closes #23081 

Removed `axis` argument from datetime/timedelta indexes in functions `min`, `argmin`, `max`, `argmax`
Hello @5hirish! Thanks for submitting the PR.

 - There are no PEP8 issues in the file [`pandas/core/indexes/datetimelike.py`](https://github.com/5hirish/pandas/blob/34d220b0121e75868261daf14d265cdfc3b0b32c/pandas/core/indexes/datetimelike.py) !

 as indicated in the issues, this is not possible due to numpy compatiblity.