build U-Boot only in Recovery

Signed-off-by: Michel-FK <[email protected]>

Author: Michel-FK

FunKey/configs/funkey_defconfig

@@ -83,17 +83,7 @@ BR2_TARGET_ROOTFS_EXT2=y
 BR2_TARGET_ROOTFS_EXT2_4=y
 BR2_TARGET_ROOTFS_EXT2_SIZE="100M"
 # BR2_TARGET_ROOTFS_TAR is not set
-BR2_TARGET_UBOOT=y
-BR2_TARGET_UBOOT_BUILD_SYSTEM_KCONFIG=y
-BR2_TARGET_UBOOT_CUSTOM_GIT=y
-BR2_TARGET_UBOOT_CUSTOM_REPO_URL="https://github.com/FunKey-Project/u-boot"
-BR2_TARGET_UBOOT_CUSTOM_REPO_VERSION="02e613eaddaacaf0ac0f0b941b90d9645be29f56"
-BR2_TARGET_UBOOT_USE_CUSTOM_CONFIG=y
-BR2_TARGET_UBOOT_CUSTOM_CONFIG_FILE="$(BR2_EXTERNAL_FUNKEY_PATH)/board/funkey/uboot.config"
-BR2_TARGET_UBOOT_NEEDS_DTC=y
-BR2_TARGET_UBOOT_NEEDS_PYLIBFDT=y
-BR2_TARGET_UBOOT_FORMAT_CUSTOM=y
-BR2_TARGET_UBOOT_FORMAT_CUSTOM_NAME="u-boot-sunxi-with-spl.bin"
 BR2_PACKAGE_HOST_DOSFSTOOLS=y
+BR2_PACKAGE_HOST_DTC=y
 BR2_PACKAGE_HOST_MTOOLS=y
 BR2_PACKAGE_HOST_UBOOT_TOOLS=y