usb: remove the dead USB_OHCI_SH option

USB_OHCI_SH is a dummy option that never builds any code, remove it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20230113062339.1909087-3-hch@lst.de


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