Temporarily remove 3.6 testing

The current 3.6 docker build appears to be broken. This merge request temporarily removes the 3.6 test pipeline before the upcoming release. https://hub.docker.com/repository/docker/bilbydev/v2-dockerfile-test-suite-python36/general

This also means other MRs can be merged if they only fail the 3.6 test pipeline

changed milestone to %0.6.2

added Testing label

changed the description

Merged this into !682 (merged)

closed