ASoC: rockchip: i2s: fix unbalanced clk_disable

mclk is enabled and disabled only in i2s_runtime_{resume,suspend}() and
we ensure that the device is runtime suspended before reaching this
clk_disable_unprepare() call, so it is wrong to call it again here.
Signed-off-by: John Keeping <john@metanate.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/rockchip/rockchip_i2s.c

@@ -694,7 +694,6 @@ static int rockchip_i2s_remove(struct platform_device *pdev)
 	if (!pm_runtime_status_suspended(&pdev->dev))
 		i2s_runtime_suspend(&pdev->dev);
 
-	clk_disable_unprepare(i2s->mclk);
 	clk_disable_unprepare(i2s->hclk);
 
 	return 0;