USB: usb-skeleton: drop redundant in-urb check

The driver bails out at probe if we can't find a bulk-in endpoint or
if we fail to allocate the URB, so drop the check in read().

Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20191009170944.30057-4-johan@kernel.org


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>