[PATCH] usb: musb-new: sunxi: remove unused define

[Sam Edwards]

Hi Marek,

> Please add missing commit message and send V2.

Ah, apologies! I had (mistakenly) believed that the summary line would 
be a sufficient commit message for something so trivial.

Instead I did a little research into how this got here and wrote a quick 
explanation of why it's unused. I figure that would be a bit more 
helpful for someone reading the commit history than just reiterating 
that "It's, y'know, unused." :)

> Otherwise
> 
> Reviewed-by: Marek Vasut <marex at denx.de>

Thank you for the speedy review!

Cheers,
Sam