build: remove unused include dir from clang package

Author: fanquake

depends/packages/native_clang.mk

@@ -16,15 +16,10 @@ endef
 define $(package)_stage_cmds
   mkdir -p $($(package)_staging_prefix_dir)/lib/clang/$($(package)_version)/include && \
   mkdir -p $($(package)_staging_prefix_dir)/bin && \
-  mkdir -p $($(package)_staging_prefix_dir)/include && \
   cp bin/clang $($(package)_staging_prefix_dir)/bin/ && \
   cp -P bin/clang++ $($(package)_staging_prefix_dir)/bin/ && \
   cp bin/dsymutil $($(package)_staging_prefix_dir)/bin/$(host)-dsymutil && \
   cp bin/llvm-config $($(package)_staging_prefix_dir)/bin/ && \
   cp lib/libLTO.so $($(package)_staging_prefix_dir)/lib/ && \
   cp -rf lib/clang/$($(package)_version)/include/* $($(package)_staging_prefix_dir)/lib/clang/$($(package)_version)/include/
 endef
-
-define $(package)_postprocess_cmds
-  rmdir include
-endef