ASoC: tscs454: remove useless test on PLL disable

cppcheck warning:

sound/soc/codecs/tscs454.c:730:37: style: Same value in both branches
of ternary operator. [duplicateValueTernary]
  val = pll1 ? FV_PLL1CLKEN_DISABLE : FV_PLL2CLKEN_DISABLE;
                                    ^

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20210312182246.5153-24-pierre-louis.bossart@linux.intel.com


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