scsi: aic7xxx: Remove set but unused variables 'targ_info' and 'value'

scsi: aic7xxx: Remove set but unused variables 'targ_info' and 'value'

Also remove 'tstate' which became unused after this patch.

Fixes the following W=1 kernel build warning(s):

 drivers/scsi/aic7xxx/aic79xx_core.c: In function ‘ahd_handle_seqint’:
 drivers/scsi/aic7xxx/aic79xx_core.c:1907:32: warning: variable ‘targ_info’ set but not used [-Wunused-but-set-variable]
 1907 | struct ahd_initiator_tinfo *targ_info;
 | ^~~~~~~~~
 drivers/scsi/pm8001/pm8001_hwi.c: In function ‘mpi_set_phys_g3_with_ssc’:
 drivers/scsi/pm8001/pm8001_hwi.c:413:6: warning: variable ‘value’ set but not used [-Wunused-but-set-variable]
 413 | u32 value, offset, i;
 | ^~~~~

Link: https://lore.kernel.org/r/20200721164148.2617584-16-lee.jones@linaro.org
Cc: Hannes Reinecke <hare@suse.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>