[sugar] need a script to clean my journal

[Albert Cahalan]

I want to delete everything that isn't an activity.

In case that isn't practical, I could settle for just
deleting everything. That would be awful though,
because I want to clean out my journal at every boot.

This is to recover some space, and maybe some
RAM or CPU time.

I'm OK with sacrificing any personal files. I really
can't get to them anyway because of performance
problems and all the spam, so it's no loss.