CLN: isort imports - io dir
Signed-off-by: alimcmaster1 <alimcmaster1@gmail.com>

 Files in `pandas/io/*` ( 1 of 2)

- [x] xref #23334
- [ ] tests added / passed
- [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
- [ ] whatsnew entry
