witherspoon: remove patches dir

Fixes: fdde2c386e7bacb93b69f5252a798fae9879ecd7
Fixes: https://github.com/open-power/op-build/issues/2051
Signed-off-by: Stewart Smith <stewart@linux.ibm.com>
diff --git a/openpower/configs/witherspoon_defconfig b/openpower/configs/witherspoon_defconfig
index 3d3fcbf..c06608b 100644
--- a/openpower/configs/witherspoon_defconfig
+++ b/openpower/configs/witherspoon_defconfig
@@ -1,6 +1,5 @@
 BR2_powerpc64le=y
 BR2_powerpc_power8=y
-BR2_GLOBAL_PATCH_DIR="$(BR2_EXTERNAL_OP_BUILD_PATH)/patches/witherspoon-patches"
 BR2_BINUTILS_EXTRA_CONFIG_OPTIONS="--enable-targets=powerpc64-linux"
 BR2_EXTRA_GCC_CONFIG_OPTIONS="--enable-targets=powerpc64-linux --disable-libsanitizer"
 BR2_TOOLCHAIN_BUILDROOT_CXX=y