ASoC: audio-graph-scu-card: remove unnecessary route patch from Example 1

Example 1 is for "Sampling Rate Conversion",
sample has only 1 CPU, 1 Codec.
Thus, "codec Playback", "DAI1 Playback" route is unnecessary.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/sound/audio-graph-scu-card.txt

@@ -43,7 +43,6 @@ Example 1. Sampling Rate Conversion
 		label = "sound-card";
 		prefix = "codec";
 		routing = "codec Playback", "DAI0 Playback",
-			  "codec Playback", "DAI1 Playback",
 			  "DAI0 Capture",   "codec Capture";
 		convert-rate = <48000>;