Remove the unused but set variable pinst in padata_parallel_worker to
fix the following warning when building with 'W=1':
  kernel/padata.c: In function ‘padata_parallel_worker’:
  kernel/padata.c:68:26: warning: variable ‘pinst’ set but not used [-Wunused-but-set-variable]
Also remove the now unused variable pd which is only used to set pinst.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Acked-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
 static void padata_parallel_worker(struct work_struct *parallel_work)
 {
        struct padata_parallel_queue *pqueue;
-       struct parallel_data *pd;
-       struct padata_instance *pinst;
        LIST_HEAD(local_list);
 
        local_bh_disable();
        pqueue = container_of(parallel_work,
                              struct padata_parallel_queue, work);
-       pd = pqueue->pd;
-       pinst = pd->pinst;
 
        spin_lock(&pqueue->parallel.lock);
        list_replace_init(&pqueue->parallel.list, &local_list);