mtd: bfin-async-flash: Remove unused variable

Avoid the following compile warning:

drivers/mtd/maps/bfin-async-flash.c: In function 'bfin_flash_probe':
drivers/mtd/maps/bfin-async-flash.c:129: warning: unused variable 'ret'
Signed-off-by: NAaron Sierra <asierra@xes-inc.com>
Signed-off-by: NBrian Norris <computersforpeace@gmail.com>

drivers/mtd/maps/bfin-async-flash.c

@@ -126,7 +126,6 @@ static const char * const part_probe_types[] = {
 
 static int bfin_flash_probe(struct platform_device *pdev)
 {
-	int ret;
 	struct physmap_flash_data *pdata = dev_get_platdata(&pdev->dev);
 	struct resource *memory = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	struct resource *flash_ambctl = platform_get_resource(pdev, IORESOURCE_MEM, 1);