net: Remove linux/prefetch.h include from linux/skbuff.h

No longer needed.

Signed-off-by: David S. Miller <davem@davemloft.net>

include/linux/skbuff.h

@@ -28,7 +28,6 @@
 #include <net/checksum.h>
 #include <linux/rcupdate.h>
 #include <linux/dmaengine.h>
-#include <linux/prefetch.h>
 #include <linux/hrtimer.h>
 
 /* Don't change this without changing skb_csum_unnecessary! */