usb: linux/usb.h: drop duplicated word in comment

Drop the doubled word "the" in a comment.
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux-usb@vger.kernel.org
Link: https://lore.kernel.org/r/20200715045701.22949-1-rdunlap@infradead.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

include/linux/usb.h

@@ -341,7 +341,7 @@ struct usb_interface_cache {
  * @interface: array of pointers to usb_interface structures, one for each
  *	interface in the configuration.  The number of interfaces is stored
  *	in desc.bNumInterfaces.  These pointers are valid only while the
- *	the configuration is active.
+ *	configuration is active.
  * @intf_cache: array of pointers to usb_interface_cache structures, one
  *	for each interface in the configuration.  These structures exist
  *	for the entire life of the device.