Get rid of u-boot-fw-utils

These tools are not required anymore and not present in dunfell release.

BugzID: 69636

recipes-bsp/u-boot/u-boot-fw-utils/fw_env.config

@@ -1,9 +0,0 @@
-# Configuration file for fw_(printenv/setenv) utility.
-# Up to two entries are valid, in this case the redundant
-# environment sector is assumed present.
-# Notice, that the "Number of sectors" is ignored on NOR and SPI-dataflash.
-# Futhermore, if the Flash sector size is ommitted, this value is assumed to
-# be the same as the Environment size, which is valid for NOR and SPI-dataflash
-
-# MTD device name					Device offset	Environment size
-/sys/bus/i2c/devices/0-0050/eeprom	0x1000			0x0800

recipes-bsp/u-boot/u-boot-fw-utils_%.bbappend

@@ -1,7 +0,0 @@
-FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"
-
-SRC_URI += "file://fw_env.config"
-
-do_install_prepend() {
-    cp -f ${WORKDIR}/fw_env.config ${S}/tools/env/
-}