I am not aware of a way to suppress those.
You might be able to minimize some of them by not using what is triggering them.
Side note it looks like multiple filters are running that are conflicting with each other. (the last two)
Are you using Teams?
[Teams are for allowing inter-department Agents to work on specific issues. If you only have one department, or do not allow cross pollination of tickets like that then likely Teams aren't needed]
I see three lines of adding Collabs.
Do you need to use multiple collaborators when the ticket is opened?
[Collabs can be added at any time, Agents in the department the ticket is in do not need to be added as a collab]