spi: mediatek: remove clk_disable_unprepare()

This patch removes clk_disable_unprepare() in mtk_spi_remove().
clk_disable_prepare/unprepare must be balance, spi-clk is disabled
in mtk_spi_probe, so not needs to disable again.
Signed-off-by: NLeilk Liu <leilk.liu@mediatek.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

drivers/spi/spi-mt65xx.c

@@ -630,7 +630,6 @@ static int mtk_spi_remove(struct platform_device *pdev)
 	pm_runtime_disable(&pdev->dev);
 
 	mtk_spi_reset(mdata);
-	clk_disable_unprepare(mdata->spi_clk);
 	spi_master_put(master);
 
 	return 0;