All right - guessed that I didn’t need that in the velocity section and placed:
logging.deprecated.enabled=false
At the end of the file - so that stopped those logs.
I see this now every 10 seconds:
{"log":"2020-03-18 16:52:48,096 [http://test.wiki.my.domain/bin/view/OnlineUsers/GetOnlineUsers?xpage=plain\u0026xpage=plain] WARN t.DefaultTransformationManager - Failed to locate transformation with hint [numberedheadings], ignoring it. Root reason [ComponentLookupException: Can't find descriptor for the component with type [interface org.xwiki.rendering.transformation.Transformation] and hint [numberedheadings]] \n","stream":"stdout","time":"2020-03-18T16:52:48.096885731Z"}
{"log":"2020-03-18 16:52:48,098 [http://test.wiki.my.domain/bin/view/OnlineUsers/GetOnlineUsers?xpage=plain\u0026xpage=plain] WARN t.DefaultTransformationManager - Failed to locate transformation with hint [numberedfigures], ignoring it. Root reason [ComponentLookupException: Can't find descriptor for the component with type [interface org.xwiki.rendering.transformation.Transformation] and hint [numberedfigures]] \n","stream":"stdout","time":"2020-03-18T16:52:48.098612543Z"}