[PATCH] pico-imx7d: Remove board_phy_config()

[Szőke Kálmán Benjamin]

Other pico SoMs still has board_phy_config() also, you should remove it from them, too.pico-imx8mq: https://github.com/u-boot/u-boot/blob/master/board/technexion/pico-imx8mq/pico-imx8mq.c#L111pico-imx6ul: https://github.com/u-boot/u-boot/blob/master/board/technexion/pico-imx6ul/pico-imx6ul.c#L110pico-imx6: https://github.com/u-boot/u-boot/blob/master/board/technexion/pico-imx6/pico-imx6.c#L314