ASoC: rt5651: remove useless assignment

cppcheck warning:

sound/soc/codecs/rt5651.c:1786:13: style: Variable 'report' is
assigned a value that is never used. [unreadVariable]
 int report = 0;
            ^
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20210302212527.55158-13-pierre-louis.bossart@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/rt5651.c

@@ -1783,7 +1783,7 @@ static void rt5651_jack_detect_work(struct work_struct *work)
 	struct rt5651_priv *rt5651 =
 		container_of(work, struct rt5651_priv, jack_detect_work);
 	struct snd_soc_component *component = rt5651->component;
-	int report = 0;
+	int report;
 
 	if (!rt5651_jack_inserted(component)) {
 		/* Jack removed, or spurious IRQ? */