Remove scikit-learn script macOS arm64 guard (#627)

tools/sklearn

@@ -36,20 +36,6 @@ sync() {
 
 install() {
     echo "sklearn install"
-    if [[ "${OSTYPE}" == darwin* ]] && [[ "$(uname -sm)" = "Darwin arm64" ]] && [[ $(${python} -c "import platform; print(platform.uname().machine);") = "arm64" ]]; then
-        echo "- arm64 [skip]"
-        return
-        venv
-        [ -x "$(brew --prefix openblas)" ] || brew install openblas > /dev/null
-        ${python} -m pip install --upgrade --no-cache-dir cython pybind11
-        ${python} -m pip install --upgrade numpy
-        export OPENBLAS=$(brew --prefix openblas)
-        export CFLAGS="-falign-functions=8 ${CFLAGS}"
-        ${python} -m pip install --upgrade --no-use-pep517 scipy
-        ${python} -m pip install --upgrade --no-cache-dir --pre --extra-index https://pypi.anaconda.org/scipy-wheels-nightly/simple --no-use-pep517 scikit-learn
-        deactivate
-        return
-    fi
     venv
     ${python} -m pip install --quiet scipy
     ${python} -m pip install --quiet --pre --extra-index https://pypi.anaconda.org/scipy-wheels-nightly/simple scikit-learn
@@ -58,10 +44,6 @@ install() {
 
 metadata() {
     echo "sklearn metadata"
-    if [[ "${OSTYPE}" == darwin* ]] && [[ "$(uname -sm)" = "Darwin arm64" ]] && [[ $(${python} -c "import platform; print(platform.uname().machine);") = "arm64" ]]; then
-        echo "- arm64 [skip]"
-        return
-    fi
     [[ $(grep -U $'\x0D' ./source/sklearn-metadata.json) ]] && crlf=1
     venv
     export PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION=python