[i2c] i2c: remove unused #include <version.h>

[Huang Weiyi]

The driver(s) below do not use LINUX_VERSION_CODE nor KERNEL_VERSION.
  drivers/i2c/busses/i2c-at91.c

This patch removes the said #include <version.h>.

Signed-off-by: Huang Weiyi <weiyi.huang at gmail.com>

diff --git a/drivers/i2c/busses/i2c-at91.c b/drivers/i2c/busses/i2c-at91.c
index c1adcdb..9efb021 100644
--- a/drivers/i2c/busses/i2c-at91.c
+++ b/drivers/i2c/busses/i2c-at91.c
@@ -14,7 +14,6 @@
 */

 #include <linux/module.h>
-#include <linux/version.h>
 #include <linux/kernel.h>
 #include <linux/err.h>
 #include <linux/slab.h>