ASoC: simple-card-utils: remove set but not used variable 'dai_name'

Fixes gcc '-Wunused-but-set-variable' warning:

sound/soc/generic/simple-card-utils.c: In function 'asoc_simple_parse_clk':
sound/soc/generic/simple-card-utils.c:164:18: warning:
 parameter 'dai_name' set but not used [-Wunused-but-set-parameter]

It's not used since commit 0580dde5 ("ASoC: simple-card-utils: add
asoc_simple_debug_info()"), so can be removed.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Mukesh Ojha <mojha@codeaurora.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/generic/simple-card-utils.c

@@ -173,10 +173,8 @@ int asoc_simple_parse_clk(struct device *dev,
 	 * see
 	 *	soc-core.c :: snd_soc_init_multicodec()
 	 */
-	if (dlc) {
+	if (dlc)
 		dai_of_node	= dlc->of_node;
-		dai_name	= dlc->dai_name;
-	}
 
 	/*
 	 * Parse dai->sysclk come from "clocks = <&xxx>"