ASoC: rsnd: remove unneeded sh_clk header

sh_clk header is not needed, and it will create confusion.
Let's remove it.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

include/sound/rcar_snd.h

@@ -12,7 +12,6 @@
 #ifndef RCAR_SND_H
 #define RCAR_SND_H
 
-#include <linux/sh_clk.h>
 
 #define RSND_GEN1_SRU	0
 #define RSND_GEN1_ADG	1

sound/soc/sh/rcar/adg.c

@@ -7,7 +7,6 @@
  * License.  See the file "COPYING" in the main directory of this archive
  * for more details.
  */
-#include <linux/sh_clk.h>
 #include "rsnd.h"
 
 #define CLKA	0