dmaengine: idxd: Remove unused pointer and macro

The pointer 'extern struct kmem_cache *idxd_desc_pool' and the macro
'#define IDXD_ALLOCATED_BATCH_SIZE 128U' were introduced in commit
bfe1d56 ("dmaengine: idxd: Init and probe for Intel data
accelerators") but they were never used.

Signed-off-by: Eder Zulian <[email protected]>
Reviewed-by: Dave Jiang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vinod Koul <[email protected]>

Author: efzrh

drivers/dma/idxd/idxd.h

@@ -19,7 +19,6 @@
 
 #define IDXD_DRIVER_VERSION	"1.00"
 
-extern struct kmem_cache *idxd_desc_pool;
 extern bool tc_override;
 
 struct idxd_wq;
@@ -171,7 +170,6 @@ struct idxd_cdev {
 
 #define DRIVER_NAME_SIZE		128
 
-#define IDXD_ALLOCATED_BATCH_SIZE	128U
 #define WQ_NAME_SIZE   1024
 #define WQ_TYPE_SIZE   10