Revert "Merge branch 'T368678-delete-schema' into 'master'"
This reverts merge request !13 (merged).
We are reverting due !13 (comment 110075):
https://wikitech.wikimedia.org/wiki/Event_Platform/Instrumentation_How_To#Decommissioning
A schema should never be deleted, but all of the stream related code and configuration can be removed at anytime to stop producing an event stream
Bug: T368678
Bug: T376065