ASoC: 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/20200202073917.195880-1-yuehaibing@huawei.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/mt6660.c

@@ -4,7 +4,6 @@
 
 #include <linux/module.h>
 #include <linux/kernel.h>
-#include <linux/version.h>
 #include <linux/err.h>
 #include <linux/i2c.h>
 #include <linux/pm_runtime.h>