scsi: qedf: Remove unused 'num_handled' variable

clang with W=1 reports:

drivers/scsi/qedf/qedf_main.c:2227:6: error: variable
  'num_handled' set but not used [-Werror,-Wunused-but-set-variable]
        int num_handled = 0;
            ^
This variable is not used so remove it.

Signed-off-by: Tom Rix <trix@redhat.com>
Link: https://lore.kernel.org/r/20230330203444.1842425-1-trix@redhat.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>