ALSA: pci: lx6464es: remove useless self-comparison

Sparse throws the following warning:

sound/pci/lx6464es/lx_core.c:677:34: error: self-comparison always
evaluates to false

This comparison and error message make no sense, let's remove them.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20210526192957.449515-2-pierre-louis.bossart@linux.intel.com


Signed-off-by: Takashi Iwai <tiwai@suse.de>