[][kernel][mt7988][eth][Remove phy init config in mt753x driver]

[Description]
Remove phy init config in mt753x driver.
Phy init is done in phy driver.

[Release-log]
N/A


Change-Id: Ic298c93f5b8ad95b8edadc982d056020265946ac
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/6958627
1 file changed