ASoC: cx2072x: remove redundant assignment to pulse_len

Variable pulse_len is being initialized to 1 however this value is
never read and pulse_len is being re-assigned later in a switch
statement.  Clean up the code by removing the redundant initialization.

Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/cx2072x.c

@@ -679,7 +679,7 @@ static int cx2072x_config_i2spcm(struct cx2072x_priv *cx2072x)
 	int is_right_j = 0;
 	int is_frame_inv = 0;
 	int is_bclk_inv = 0;
-	int pulse_len = 1;
+	int pulse_len;
 	int frame_len = cx2072x->frame_size;
 	int sample_size = cx2072x->sample_size;
 	int i2s_right_slot;