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>