Fix cleanup and install target toolchain bin

Author: kateinoigakukun

utils/webassembly/build-toolchain.sh

@@ -80,15 +80,11 @@ sed -i -e "s@\".*/include@\"../../../../share/wasi-sysroot/include@g" $SOURCE_PA
 # Avoid copying usr/lib/swift/clang because our toolchain's one is a directory
 # but nightly's one is symbolic link. A simple copy fails to merge them.
 rsync -v -a $SOURCE_PATH/install/$TOOLCHAIN_NAME/usr/lib/ $HOST_TOOLCHAIN_SDK/usr/lib/ --exclude 'swift/clang'
+rsync -v -a $SOURCE_PATH/install/$TOOLCHAIN_NAME/usr/bin/ $HOST_TOOLCHAIN_SDK/usr/bin/
 
 # FIXME: avoid building foundation for now
 $UTILS_PATH/build-foundation.sh $HOST_TOOLCHAIN_SDK
 $UTILS_PATH/build-xctest.sh $HOST_TOOLCHAIN_SDK
 
-# Cleanup build directory on CI
-if [[ -n "${CI}" ]]; then
-  rm -rf $SOURCE_PATH/build/Ninja-ReleaseAssert/
-fi
-
 cd $HOST_TOOLCHAIN_DESTDIR
 tar cfz $PACKAGE_ARTIFACT $TOOLCHAIN_NAME