[][Remove mtk eth patches if build on Openwrt trunk kernel v5.10]

[Description]
Remove mtk eth patches if build on Openwrt trunk kernel v5.10

[Release-log]
N/A

Change-Id: I36d4f6ac29507c466bc2bcb1ea2b6e5e671f4b37
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/4901660
1 file changed