Remove python 3.6 distutils

Author: andrivet

.github/workflows/tests.yml

@@ -21,7 +21,7 @@ jobs:
             python2.7 \
             python3.4 \
             python3.5 \
-            python3.6 python3.6-distutils \
+            python3.6 \
             python3.7 python3.7-distutils \
             python3.8 python3.8-distutils \
             python3.9 \