usb: ulpi: Remove unused otg_ulpi_create

otg_ulpi_create() has been unused since 2022's
commit 8ca79aaa ("ARM: pxa: remove unused pxa3xx-ulpi")

Remove it.

The devm_ variant is still used.

Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Link: https://lore.kernel.org/r/20250223160602.91916-1-linux@treblig.org


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