Don't publish with cython

.github/workflows/publish.yml

@@ -17,10 +17,9 @@ jobs:
     - name: Install build dependencies
       run: |
         python -m pip install --upgrade pip
-        python -m pip install setuptools wheel numpy cython
+        python -m pip install setuptools wheel
     - name: Build wheel
       run: |
-        python setup.py build_ext --inplace
         python setup.py sdist bdist_wheel
     - name: Test wheel
       run: |