dmaengine: sdxi: context: Remove unused cxt backpointer from sdxi_sq

Signed-off-by: Nathan Lynch <nathan.lynch@amd.com>

Author: nathanlynch

drivers/dma/sdxi/context.h

@@ -36,8 +36,6 @@ static inline u8 akey_table_order(const struct sdxi_akey_table *tbl)
 
 /* Submission Queue */
 struct sdxi_sq {
-	struct sdxi_cxt *cxt;		/* owner */
-
 	u32 ring_entries;
 	u32 ring_size;
 	struct sdxi_desc *desc_ring;