[SOUND/SOC] removed unused #include <version.h>

The files below do not use LINUX_VERSION_CODE nor KERNEL_VERSION.
  sound/soc/codecs/wm8753.c
  sound/soc/codecs/wm9712.c

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

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

diff --git a/sound/soc/codecs/wm8753.c b/sound/soc/codecs/wm8753.c
index 8604809..dc7b18f 100644
--- a/sound/soc/codecs/wm8753.c
+++ b/sound/soc/codecs/wm8753.c
@@ -34,7 +34,6 @@

 #include <linux/module.h>
 #include <linux/moduleparam.h>
-#include <linux/version.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/delay.h>
diff --git a/sound/soc/codecs/wm9712.c b/sound/soc/codecs/wm9712.c
index 1fb7f9a..2f1c91b 100644
--- a/sound/soc/codecs/wm9712.c
+++ b/sound/soc/codecs/wm9712.c
@@ -13,7 +13,6 @@

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