meta-ktn-imx: u-boot-ktn: Remove deprecated recipe for v2020.01

layers/meta-ktn-imx/recipes-bsp/u-boot/u-boot-ktn_2020.01.bb

-require u-boot-ktn-common.inc
-require recipes-bsp/u-boot/u-boot.inc
-
-DEPENDS += "bc-native dtc-native u-boot-mkenvimage-native"
-
-# v2020.01 + KTN Patches
-SRCREV = "78e644d54f0b5fc14879023263e3b7246ee00af8"
-SRCBRANCH = "develop-v2020.01-ktn"
-
-SRC_URI[md5sum] = "d86276b74616cc9945e38fc1412772c9"
-SRC_URI[sha256sum] = "7a986967fd3a79432a9a0a6a3ff27edb67c6e96583cb4abeb886fdd7f74f0824"
-
-SRC_URI:append_ktn-mx6ul = " \
-    file://fw_env.config \
-    file://uboot-env-mx6ul.txt; \
-"
-
-inherit fsl-u-boot-localversion
-
-# backported upstream changes
-inherit python3native
-DEPENDS:remove = "python-native"
-EXTRA_OEMAKE += 'STAGING_INCDIR=${STAGING_INCDIR_NATIVE} STAGING_LIBDIR=${STAGING_LIBDIR_NATIVE}'
-
-SCMVERSION = "y"
-LOCALVERSION = "_${DISTRO_CODENAME}_${DISTRO_VERSION}"
-
-# Set custom make targets for SPL and U-Boot proper
-UBOOT_MAKE_TARGET_mx8 = "flash.bin u-boot.itb"
-
-# deploy uboot-env binary
-do_deploy:append() {
-    if [ -n "${UBOOT_ENV}" ]; then
-        mkenvimage -r -s 0x10000 -o ${DEPLOYDIR}/${UBOOT_ENV}.bin ${DEPLOYDIR}/${UBOOT_ENV_BINARY}
-    fi
-}