If you rename it to [BLANK] (that is, delete the Folder Name), Windows will automatically rename it back to the Folder Name.
Even if you rename it to (' ') SPACE, Windows will still rename it back to its Folder Name.
But! Here's a technique I'll share with you on how to rename your folder to blank:
- Highlight the folder you want to rename
- Press F2, or Right-click > Rename
- Hold [ALT]
- Press the number keys:   
An alternative for this is also using [ALT] + 0160.
Why is that? Well, learn your Ascii, my friend!