ASoC: cs35l56: Remove redundant 'flush_workqueue()' calls

'destroy_workqueue()' already drains the queue before destroying it, so
there is no need to flush it explicitly.

Remove the redundant 'flush_workqueue()' calls.

This was generated with coccinelle:

@@
expression E;
@@
-flush_workqueue(E);
 destroy_workqueue(E);

Signed-off-by: Chen Ni <nichen@iscas.ac.cn>
Link: https://patch.msgid.link/20250312072635.1429870-1-nichen@iscas.ac.cn
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: Chen Ni

sound/soc/codecs/cs35l56.c

@@ -1441,7 +1441,6 @@ void cs35l56_remove(struct cs35l56_private *cs35l56)
 	if (cs35l56->base.irq)
 		devm_free_irq(cs35l56->base.dev, cs35l56->base.irq, &cs35l56->base);
 
-	flush_workqueue(cs35l56->dsp_wq);
 	destroy_workqueue(cs35l56->dsp_wq);
 
 	pm_runtime_dont_use_autosuspend(cs35l56->base.dev);