Comment 5 for bug 1425528

Quick 2 cents, Mario with regards to removing config options, we don't yet have a way to completely remove config options while still being able to support upgrades for people that may still be using them. So, for the moment we have to keep all existing config options but there is no harm in updating the config.yaml description to indicate that this option should no longer be used and recommend that it be set a null setting or suchlike. We are aiming to have a solution for deprecating config options soon though.