skd_main: drop duplicate header scatterlist.h

Drop duplicate header scatterlist.h from skd_main.c.
Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Signed-off-by: Jens Axboe <axboe@fb.com>

drivers/block/skd_main.c

@@ -36,7 +36,6 @@
 #include <linux/scatterlist.h>
 #include <linux/version.h>
 #include <linux/err.h>
-#include <linux/scatterlist.h>
 #include <linux/aer.h>
 #include <linux/ctype.h>
 #include <linux/wait.h>