ASoC: Intel: Skylake: remove IVI codec loop in skl_nau88l25_ssm4567 machine

The IVI loop is removed in skl_nau88l25_ssm4567 machine as we
enable this path thru DAPM graph using the PCM device and not
thru loop

Signed-off-by: Jeeja KP <jeeja.kp@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>