Remove NATIVE folder Emscripten llvm build

Author: mcbarton

.github/workflows/emscripten.yml

@@ -329,6 +329,7 @@ jobs:
                         ../llvm
           emmake ninja libclang clangInterpreter clangStaticAnalyzerCore lldWasm -j ${{ env.ncpus }}
         fi
+        rm -rf ./NATIVE/
         cd ../
         rm -rf $(find . -maxdepth 1 ! -name "build" ! -name "llvm" ! -name "clang" ! -name ".")
         if [[ "${cling_on}" == "ON" ]]; then