dmaengine: ti: edma: remove unused code

drivers/dma/ti/edma.c: In function edma_probe:
drivers/dma/ti/edma.c:2252:11: warning:
 variable off set but not used [-Wunused-but-set-variable]

'off' is not used now, so remove it.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Link: https://lore.kernel.org/r/20190905060249.23928-1-yuehaibing@huawei.comSigned-off-by: Vinod Koul <vkoul@kernel.org>

drivers/dma/ti/edma.c

@@ -2249,10 +2249,8 @@ static int edma_probe(struct platform_device *pdev)
 {
 	struct edma_soc_info	*info = pdev->dev.platform_data;
 	s8			(*queue_priority_mapping)[2];
-	int			i, off;
 	const s16		(*rsv_slots)[2];
-	const s16		(*xbar_chans)[2];
-	int			irq;
+	int			i, irq;
 	char			*irq_name;
 	struct resource		*mem;
 	struct device_node	*node = pdev->dev.of_node;
@@ -2349,14 +2347,6 @@ static int edma_probe(struct platform_device *pdev)
 			edma_write_slot(ecc, i, &dummy_paramset);
 	}
 
-	/* Clear the xbar mapped channels in unused list */
-	xbar_chans = info->xbar_chans;
-	if (xbar_chans) {
-		for (i = 0; xbar_chans[i][1] != -1; i++) {
-			off = xbar_chans[i][1];
-		}
-	}
-
 	irq = platform_get_irq_byname(pdev, "edma3_ccint");
 	if (irq < 0 && node)
 		irq = irq_of_parse_and_map(node, 0);