scsi: mpt3sas: Remove unused config functions

mpt3sas_config_get_manufacturing_pg7() and
mpt3sas_config_get_sas_device_pg1() were added as part of 2012's
commit f92363d1 ("[SCSI] mpt3sas: add new driver supporting 12GB SAS")
but haven't been used.

Remove them.

Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Link: https://lore.kernel.org/r/20250127002851.113711-1-linux@treblig.org


Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>