char: ipmi_si_ls2k500: convert to the .remove_new (void) callback

With commit 74a5b94 ("ARM: Convert to platform remove callback
returning void"), the .remove() callback for platform drivers was
refactored into void (previously int), with the callback renamed as
.remove_new().

Follow the commit and refactor this driver.

Signed-off-by: Mingcong Bai <jeffbai@aosc.io>

Author: MingcongBai

drivers/char/ipmi/ipmi_si_ls2k500.c

@@ -137,11 +137,9 @@ static int of_ipmi_ls2k500_probe(struct platform_device *pdev)
 	return rv;
 }
 
-static int ipmi_ls2k500_remove(struct platform_device *pdev)
+static void ipmi_ls2k500_remove(struct platform_device *pdev)
 {
 	ipmi_si_remove_by_dev(&pdev->dev);
-
-	return 0;
 }
 
 #define LS2K500_SI_DEVICE_NAME "ipmi_ls2k500_si"
@@ -150,7 +148,7 @@ struct platform_driver ipmi_ls2k500_platform_driver = {
 		.name = LS2K500_SI_DEVICE_NAME,
 	},
 	.probe		= of_ipmi_ls2k500_probe,
-	.remove		= ipmi_ls2k500_remove,
+	.remove_new	= ipmi_ls2k500_remove,
 };
 
 static bool platform_registered;

drivers/video/fbdev/ls2k500sfb.c

@@ -627,14 +627,12 @@ static int simplefb_probe(struct platform_device *pdev)
 	return ret;
 }
 
-static int simplefb_remove(struct platform_device *pdev)
+static void simplefb_remove(struct platform_device *pdev)
 {
 	struct fb_info *info = platform_get_drvdata(pdev);
 
 	unregister_framebuffer(info);
 	framebuffer_release(info);
-
-	return 0;
 }
 
 static struct platform_driver simplefb_driver = {