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

sound/pci/lx6464es/lx_core.c

@@ -674,10 +674,6 @@ int lx_stream_set_format(struct lx6464es *chip, struct snd_pcm_runtime *runtime,
 	u32 pipe_cmd = PIPE_INFO_TO_CMD(is_capture, pipe);
 	u32 channels = runtime->channels;
 
-	if (runtime->channels != channels)
-		dev_err(chip->card->dev, "channel count mismatch: %d vs %d",
-			   runtime->channels, channels);
-
 	mutex_lock(&chip->msg_lock);
 	lx_message_init(&chip->rmh, CMD_0C_DEF_STREAM);