ASoC: SOF: topology: remove redundant code

With the change in the commit:
"ASoC: SOF: Intel: hda: assign link DMA channel at run-time",
there is no need to find the CPU DAI in sof_link_hda_load().

Fixes: bdf4ad3f ('ASoC: SOF: Intel: hda: assign link DMA channel at
run-time')

Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20220307181111.49392-6-ranjani.sridharan@linux.intel.com


Signed-off-by: Mark Brown <broonie@kernel.org>