Large amount of uninformative output from IPC system

[colin-grant-work]

Bug Description:

The IPC system appears to be making a large number of logs at info level. They should likely be demoted to debug or trace level, or removed if no longer necessary.

@tortmayr, @JonasHelming

Steps to Reproduce:

1. Start the application
2. Do some things (or walk away)
3. Find a large number of logs of IPC activity.

Additional Information

• Theia Version: 9ec8835

[JonasHelming]

@tortmayr is on it, thanks!

[tortmayr]

Fixed with #11197
A debug/dev log message was committed on accident an managed to sneak through the code reviews.