New Feature Request: df.style.hide_index() to hide a particular index level

#### Problem description

The present implementation of `df.style.hide_index()` removes the complete index while rendering html. 
It would be better to have an optional input of index level and hide only that index level while rendering.
example  `df.style.hide_index(level=1)`
It provides more option and flexibility to user. 

 Sorry to post this as an issue, but I didn't find any option for suggesting new features.
