drm/amdgpu: remove redundant assignment of variable k

The variable k is being assigned a value that is never read, the
assignment is redundant and can be removed.

Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c

@@ -278,7 +278,7 @@ static int amdgpu_amdkfd_remove_eviction_fence(struct amdgpu_bo *bo,
 	write_seqcount_end(&resv->seq);
 
 	/* Drop the references to the removed fences or move them to ef_list */
-	for (i = j, k = 0; i < old->shared_count; ++i) {
+	for (i = j; i < old->shared_count; ++i) {
 		struct dma_fence *f;
 
 		f = rcu_dereference_protected(new->shared[i],