b43: remove extraneous code in free_ringmemory

This code seems to have been cut-n-pasted from alloc_ringmemory?
Anyway, it is useless.

Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/b43/dma.c b/drivers/net/wireless/b43/dma.c
index 10d0aaf..3d5566e 100644
--- a/drivers/net/wireless/b43/dma.c
+++ b/drivers/net/wireless/b43/dma.c
@@ -415,11 +415,6 @@
 
 static void free_ringmemory(struct b43_dmaring *ring)
 {
-	gfp_t flags = GFP_KERNEL;
-
-	if (ring->type == B43_DMA_64BIT)
-		flags |= GFP_DMA;
-
 	dma_free_coherent(ring->dev->dev->dma_dev, B43_DMA_RINGMEMSIZE,
 			  ring->descbase, ring->dmabase);
 }