Revert "usb: musb: restore INDEX register in resume path"

This reverts commit 262e2d9d.

Turns out this breaks the build, and as such, really isn't needed for
the 2.6.32-stable branch at all.
Reported-by: Phil Carmody <ext-phil.2.carmody@nokia.com>
Cc: Anand Gadiyar <gadiyar@ti.com>
Cc: Ajay Kumar Gupta <ajay.gupta@ti.com>
Cc: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/usb/musb/musb_core.c

@@ -1634,7 +1634,6 @@ void musb_dma_completion(struct musb *musb, u8 epnum, u8 transmit)
 			}
 		}
 	}
-	musb_writeb(musb_base, MUSB_INDEX, musb->context.index);
 }
 
 #else