gpio: mlxbf2: remove unused including <linux/version.h>

Remove including <linux/version.h> that don't need it.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Link: https://lore.kernel.org/r/20200408070832.137037-1-yuehaibing@huawei.comAcked-by: Asmaa Mnebhi <Asmaa@mellanox.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/gpio/gpio-mlxbf2.c

@@ -14,7 +14,6 @@
 #include <linux/resource.h>
 #include <linux/spinlock.h>
 #include <linux/types.h>
-#include <linux/version.h>
 
 /*
  * There are 3 YU GPIO blocks: