Remove auto generated posts in teamsite

[PMarcus]

How can I remove the auto generated posts in a teamsite when added someone or when made someone owner, etc? See image:

[#2]

This is something you cannot do yet, but there will be an update that will allow to control the messages posted in the General channel

[#3]

@Juan Carlos González Martín Is there an update to this?  It would be very helpful to keep a teams site clean.