BUG: Styler.hide_columns() does not hide index name row
- [ ] closes #42101 
- [ ] tests not added. Will update this PR with the tests.


Hello @raghuabhishek! 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:

* In the file [`pandas/io/formats/style_render.py`](https://github.com/pandas-dev/pandas/blob/3d7985ffedd751ac7d9eb588dedcf1a15038fcb5/pandas/io/formats/style_render.py):

> [Line 353:1](https://github.com/pandas-dev/pandas/blob/3d7985ffedd751ac7d9eb588dedcf1a15038fcb5/pandas/io/formats/style_render.py#L353): [E101](https://duckduckgo.com/?q=pep8%20E101) indentation contains mixed spaces and tabs
> [Line 353:1](https://github.com/pandas-dev/pandas/blob/3d7985ffedd751ac7d9eb588dedcf1a15038fcb5/pandas/io/formats/style_render.py#L353): [W191](https://duckduckgo.com/?q=pep8%20W191) indentation contains tabs
> [Line 353:8](https://github.com/pandas-dev/pandas/blob/3d7985ffedd751ac7d9eb588dedcf1a15038fcb5/pandas/io/formats/style_render.py#L353): [E131](https://duckduckgo.com/?q=pep8%20E131) continuation line unaligned for hanging indent



##### Comment last updated at 2021-06-23 14:24:46 UTC > Will update this PR with the tests.

It might be enough to correct the failing test actually.

 This pull request is stale because it has been open for thirty days with no activity. Please update or respond to this comment if you're still interested in working on this.