ASoC: mt8195: remove unnecessary CONFIG_PM

ASoC: mt8195: remove unnecessary CONFIG_PM

The unnecessary conditional inclusion caused the following warning.

>> sound/soc/mediatek/mt8195/mt8195-afe-pcm.c:3260:32: warning: unused
>> variable 'mt8195_afe_pm_ops' [-Wunused-const-variable]
   static const struct dev_pm_ops mt8195_afe_pm_ops = {
                                  ^
   1 warning generated.

Because runtime_pm already handles the case without CONFIG_PM, we
can remove CONFIG_PM condition.

Fixes: 6746cc858259 ("ASoC: mediatek: mt8195: add platform driver")
Signed-off-by: Trevor Wu <trevor.wu@mediatek.com>
Reported-by: kernel test robot <lkp@intel.com>
Link: https://lore.kernel.org/r/20210902071440.6087-1-trevor.wu@mediatek.com
Signed-off-by: Mark Brown <broonie@kernel.org>