[][Remove mt7981 PWM redundant patch]

[Description]
Remove PWM redundant patch

[Release-log]
N/A

Change-Id: Ie65a4de555b0dfef02f19e15f0ab7a98fef5d17b
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/5388588
1 file changed