Revert "Lock when calling Console::stop_threads()"

This reverts commit 646b214a64684eceb04d1cf0522c8a336b0a7086.

There was a problem in the conditional that made it appear as if this commit
actually solved the problem. I could make up a number of excuses as to why this
slipped past my eye, but the reality is that I'm just a dumbass for missing
this.