mmc: sdhci-pltfm: Remove sdhci_pltfm_unregister()

Now that sdhci_pltfm_unregister() is unused, remove it.

Signed-off-by: Adrian Hunter <[e-mail]>
Reviewed-by: Andy Shevchenko <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Ulf Hansson <[e-mail]>

drivers/mmc/host/sdhci-pltfm.c

···
 }
 EXPORT_SYMBOL_GPL(sdhci_pltfm_register);
 
-void sdhci_pltfm_unregister(struct platform_device *pdev)
-{
-	struct sdhci_host *host = platform_get_drvdata(pdev);
-	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
-	int dead = (readl(host->ioaddr + SDHCI_INT_STATUS) == 0xffffffff);
-
-	sdhci_remove_host(host, dead);
-	clk_disable_unprepare(pltfm_host->clk);
-	sdhci_pltfm_free(pdev);
-}
-EXPORT_SYMBOL_GPL(sdhci_pltfm_unregister);
-
 void sdhci_pltfm_remove(struct platform_device *pdev)
 {
 	struct sdhci_host *host = platform_get_drvdata(pdev);

drivers/mmc/host/sdhci-pltfm.h

···
 extern int sdhci_pltfm_register(struct platform_device *pdev,
 				const struct sdhci_pltfm_data *pdata,
 				size_t priv_size);
-extern void sdhci_pltfm_unregister(struct platform_device *pdev);
 extern void sdhci_pltfm_remove(struct platform_device *pdev);
 
 extern unsigned int sdhci_pltfm_clk_get_max_clock(struct sdhci_host *host);