pwm: mediatek: Remove redundant MODULE_ALIAS entries

MODULE_ALIAS exports information to allow the module to be auto-loaded at
boot for the drivers registered using legacy platform registration.

However, currently the driver is always used by DT-only platform,
MODULE_ALIAS is redundant and should be removed properly.
Signed-off-by: NSean Wang <sean.wang@mediatek.com>
Signed-off-by: NThierry Reding <thierry.reding@gmail.com>

drivers/pwm/pwm-mediatek.c

@@ -298,5 +298,4 @@ static struct platform_driver mtk_pwm_driver = {
 module_platform_driver(mtk_pwm_driver);
 
 MODULE_AUTHOR("John Crispin <blogic@openwrt.org>");
-MODULE_ALIAS("platform:mtk-pwm");
 MODULE_LICENSE("GPL");