net: liquidio: Remove unused validate_cn23xx_pf_config_info()

net: liquidio: Remove unused validate_cn23xx_pf_config_info()

[Note, I'm wondering if actually this is a case of a missing call;
the other similar function is called in __verify_octeon_config_info(),
but I don't have or know the hardware.]

validate_cn23xx_pf_config_info() was added in 2016 by
commit 72c0091293c0 ("liquidio: CN23XX device init and sriov config")

Remove it.

Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Link: https://patch.msgid.link/20250614234941.61769-1-linux@treblig.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>