Remove protocol version request IOCTL from UAPI

The current implementation of the protocol version request IOCTL call
doesn't return any version information and the protocol version is not
needed by any userspace program as it's for the communication between
the Linux kernel NPU driver and firmware. The IOCTL call has therefore
been removed from the UAPI and the inference runner has been updated
accordingly.

Change-Id: I9ed09e55d9522996a182f237c8a6db2f45bc40a9
Signed-off-by: Mikael Olsson <mikael.olsson@arm.com>