USB: core: drop outdated interface-binding comment

It's been almost twenty years since USB drivers returned a data pointer
from their probe routines in order to bind to an interface.

Time to update the documentation for usb_driver_claim_interface().

Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20210318155406.22399-1-johan@kernel.org


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