Removed all the unused variables.

Link: https://lore.kernel.org/r/20200622093814.3250-1-jhasan@marvell.comReported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Javed Hasan <jhasan@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>