ASoC: SOF: amd: remove redundant clock mux selection register write

ACP clock mux selection register is already programmed during acp init
sequence.
Remove the redundant register write.

Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Link: https://lore.kernel.org/r/20230823073340.2829821-4-Vijendar.Mukunda@amd.com


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