net/ism: Remove extra include

Signed-off-by: Stefan Raspl <raspl@linux.ibm.com>
Signed-off-by: Wenjia Zhang <wenjia@linux.ibm.com>
Reviewed-by: Tony Lu <tonylu@linux.alibaba.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/s390/net/ism_drv.c

@@ -11,7 +11,6 @@
 #include <linux/types.h>
 #include <linux/interrupt.h>
 #include <linux/device.h>
-#include <linux/pci.h>
 #include <linux/err.h>
 #include <linux/ctype.h>
 #include <linux/processor.h>