Staging: rtl8712: rtl871x_io: Remove explicit cast

Explicit typecasting is not required and should be removed.
Semantic patch used:
@@
type T;
T e;
identifier x;
@@

* T x = (T)e;
Signed-off-by: Shivani Bhardwaj <shivanib134@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8712/rtl871x_io.c

@@ -150,7 +150,7 @@ uint r8712_alloc_io_queue(struct _adapter *adapter)
 
 void r8712_free_io_queue(struct _adapter *adapter)
 {
-	struct io_queue *pio_queue = (struct io_queue *)(adapter->pio_queue);
+	struct io_queue *pio_queue = adapter->pio_queue;
 
 	if (pio_queue) {
 		kfree(pio_queue->pallocated_free_ioreqs_buf);