ASoC: stm32: i2s: remove useless callback

Clocks do not need to be released on driver removal,
as this is already managed before.
Remove useless remove callback.
Signed-off-by: Olivier Moysan <olivier.moysan@st.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/stm/stm32_i2s.c

@@ -902,16 +902,6 @@ static int stm32_i2s_probe(struct platform_device *pdev)
 				  I2S_CGFR_I2SMOD, I2S_CGFR_I2SMOD);
 }
 
-static int stm32_i2s_remove(struct platform_device *pdev)
-{
-	struct stm32_i2s_data *i2s = platform_get_drvdata(pdev);
-
-	clk_disable_unprepare(i2s->i2sclk);
-	clk_disable_unprepare(i2s->pclk);
-
-	return 0;
-}
-
 MODULE_DEVICE_TABLE(of, stm32_i2s_ids);
 
 #ifdef CONFIG_PM_SLEEP
@@ -945,7 +935,6 @@ static struct platform_driver stm32_i2s_driver = {
 		.pm = &stm32_i2s_pm_ops,
 	},
 	.probe = stm32_i2s_probe,
-	.remove = stm32_i2s_remove,
 };
 
 module_platform_driver(stm32_i2s_driver);