ASoC: Intel: catpt: Cleanup after power routines streamlining

With LPT switching to WPT-based power on/off routines, functions that
have been previously used by it are rendered redundant so remove them.

Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Link: https://lore.kernel.org/r/20201116133332.8530-6-cezary.rojewski@intel.com


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