[][kernel][mt7981][eth][phy: mediatek-ge: Remove TX-AMP redundant settings]

[Description]
Remove TX-AMP redundant settings, which won't be used anymore, because
driver will fail to probe once efuse values are invalid.

[Release-log]
N/A

Change-Id: I4c511ffab7e9c7a6722b63bac08de1ffed78267d
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/7314039
diff --git a/target/linux/mediatek/files-5.4/drivers/net/phy/mediatek-ge.c b/target/linux/mediatek/files-5.4/drivers/net/phy/mediatek-ge.c
index fb74030..59b64a0 100644
--- a/target/linux/mediatek/files-5.4/drivers/net/phy/mediatek-ge.c
+++ b/target/linux/mediatek/files-5.4/drivers/net/phy/mediatek-ge.c
@@ -920,26 +920,6 @@
 	phy_write_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_2nd_OVERSHOOT_LEVEL_N1TO0,
 		      0x5);
 
-	/* TX-AMP finetune:
-	 * 100M +4, 1000M +6 to default value.
-	 * If efuse values aren't valid, TX-AMP uses the below values.
-	 */
-	phy_write_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_TXVLD_DA_RG, 0x9824);
-	phy_write_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_TX_I2MPB_TEST_MODE_A2,
-		      0x9026);
-	phy_write_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_TX_I2MPB_TEST_MODE_B1,
-		      0x2624);
-	phy_write_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_TX_I2MPB_TEST_MODE_B2,
-		      0x2426);
-	phy_write_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_TX_I2MPB_TEST_MODE_C1,
-		      0x2624);
-	phy_write_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_TX_I2MPB_TEST_MODE_C2,
-		      0x2426);
-	phy_write_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_TX_I2MPB_TEST_MODE_D1,
-		      0x2624);
-	phy_write_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_TX_I2MPB_TEST_MODE_D2,
-		      0x2426);
-
 	phy_select_page(phydev, MTK_PHY_PAGE_EXTENDED_52B5);
 	/* SlvDSPreadyTime = 24, MasDSPreadyTime = 24 */
 	__phy_write(phydev, 0x11, 0xc71);