kernel: rtl8261n: drop unreachable PHY register patch

The PHY register patch in question is gated by `CONFIG_MACH_REALTEK_RTL`,
has no documented/expected behavior, and is in practice unreachable:
`phy_patch()` is only called from `rtkphy_config_init()`, which is exits
(too) early for `CONFIG_MACH_REALTEK_RTL` builds.

Remove it as a cleanup step before enabling standard USXGMII configuration
for these PHYs.

Fixes: b77fa45 ("kernel: fix rtl8261n driver for realtek")
Co-authored-by: Jonas Jelonek <jelonek.jonas@gmail.com>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Link: openwrt/openwrt#23076
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

Author: 2 people

target/linux/generic/files/drivers/net/phy/rtl8261n/phy_patch.c

@@ -98,11 +98,6 @@ static int32 _phy_patch_process(uint32 unit, rtk_port_t port, uint8 portOffset,
     return (chk_ret == RT_ERR_CHECK_FAILED) ? chk_ret : RT_ERR_OK;
 }
 
-rtk_hwpatch_t rtl826XB_patch_rtk_conf[] = {
-    {RTK_PATCH_OP_PSDS0   , 0xff , 0x07  , 0x10  , 15, 0, 0x80aa, RTK_PATCH_CMP_WC  , 0, 0, 0, 0},
-    {RTK_PATCH_OP_PSDS0   , 0xff , 0x06  , 0x12  , 15, 0, 0x5078, RTK_PATCH_CMP_WC  , 0, 0, 0, 0},
-};
-
 /* Function Name:
  *      phy_patch
  * Description:
@@ -175,16 +170,6 @@ int32 phy_patch(uint32 unit, rtk_port_t port, uint8 portOffset, uint8 patch_mode
             break;
         }
     }
-#ifdef CONFIG_MACH_REALTEK_RTL
-    ret = _phy_patch_process(unit, port, portOffset, rtl826XB_patch_rtk_conf, sizeof(rtl826XB_patch_rtk_conf), patch_mode);
-    if (ret == RT_ERR_CHECK_FAILED)
-        chk_ret = ret;
-    else if (ret  != RT_ERR_OK)
-    {
-        RT_LOG(LOG_MAJOR_ERR, (MOD_HAL | MOD_PHY), "U%u P%u patch_mode:%u id:%u patch-%u failed. ret:0x%X\n", unit, port, patch_mode, i, patch_type, ret);
-        return ret;
-    }
-#endif
 
     return (chk_ret == RT_ERR_CHECK_FAILED) ? chk_ret : RT_ERR_OK;
 }