diff --git a/openpower/configs/openpower_p9_mambo_defconfig b/openpower/configs/openpower_p9_mambo_defconfig
deleted file mode 100644
index 7112ae6..0000000
--- a/openpower/configs/openpower_p9_mambo_defconfig
+++ /dev/null
@@ -1,52 +0,0 @@
-BR2_powerpc64le=y
-BR2_powerpc_power8=y
-BR2_BINUTILS_EXTRA_CONFIG_OPTIONS="--enable-targets=powerpc64-linux"
-BR2_EXTRA_GCC_CONFIG_OPTIONS="--enable-targets=powerpc64-linux --disable-libsanitizer"
-BR2_TARGET_GENERIC_HOSTNAME="skiroot-p9"
-BR2_ROOTFS_DEVICE_CREATION_DYNAMIC_EUDEV=y
-BR2_ROOTFS_DEVICE_TABLE="../openpower/device_table.txt"
-BR2_TARGET_GENERIC_GETTY_PORT="hvc0"
-BR2_GENERATE_LOCALE="en_US.UTF-8"
-BR2_ROOTFS_OVERLAY="../openpower/overlay"
-BR2_ROOTFS_POST_BUILD_SCRIPT="../openpower/scripts/fixup-target-var ../openpower/scripts/firmware-whitelist"
-BR2_LINUX_KERNEL=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.18.3"
-BR2_LINUX_KERNEL_PATCH="$(BR2_EXTERNAL_OP_BUILD_PATH)/linux"
-BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
-BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="$(BR2_EXTERNAL_OP_BUILD_PATH)/configs/linux/skiroot_defconfig"
-BR2_LINUX_KERNEL_ZIMAGE_EPAPR=y
-BR2_LINUX_KERNEL_XZ=y
-BR2_PACKAGE_BUSYBOX_CONFIG_FRAGMENT_FILES="$(BR2_EXTERNAL_OP_BUILD_PATH)/configs/busybox.fragment"
-BR2_PACKAGE_BUSYBOX_SHOW_OTHERS=y
-BR2_PACKAGE_LINUX_FIRMWARE=y
-BR2_PACKAGE_LINUX_FIRMWARE_BNX2X=y
-BR2_PACKAGE_LINUX_FIRMWARE_CXGB4_T4=y
-BR2_PACKAGE_IPMITOOL=y
-BR2_PACKAGE_IPMITOOL_USB=y
-BR2_PACKAGE_MDADM=y
-BR2_PACKAGE_NCURSES_WCHAR=y
-BR2_PACKAGE_DROPBEAR=y
-# BR2_PACKAGE_DROPBEAR_SERVER is not set
-BR2_PACKAGE_ETHTOOL=y
-BR2_PACKAGE_LRZSZ=y
-BR2_PACKAGE_NETCAT=y
-BR2_PACKAGE_RSYNC=y
-BR2_TARGET_ROOTFS_CPIO_XZ=y
-BR2_TARGET_ROOTFS_INITRAMFS=y
-BR2_OPENPOWER_PLATFORM=y
-BR2_OPENPOWER_POWER9=y
-# BR2_PACKAGE_HOST_OPENPOWER_FFS is not set
-# BR2_PACKAGE_HOSTBOOT is not set
-# BR2_PACKAGE_HOSTBOOT_BINARIES is not set
-# BR2_PACKAGE_MACHINE_XML is not set
-# BR2_PACKAGE_OPENPOWER_PNOR is not set
-BR2_OPENPOWER_CONFIG_NAME="openpower-mambo-p9"
-BR2_PACKAGE_PETITBOOT=y
-BR2_PACKAGE_PETITBOOT_MTD=y
-# BR2_PACKAGE_HCODE is not set
-# BR2_PACKAGE_OCC is not set
-# BR2_PACKAGE_CAPP_UCODE is not set
-# BR2_PACKAGE_HOST_PPE42_BINUTILS is not set
-# BR2_PACKAGE_HOST_PPE42_GCC is not set
-# BR2_PACKAGE_IMA_CATALOG is not set