Disable "Set Background"

"Background" feature for procs is not intended to be used like it is in here, and causes

issues if abused. Turning it off will provide proper CPU cycles
profiling for future optimizations.

Any questions or concerns regarding this are welcomed.

For those unaware of why "set background" abuse is bad, BYOND runs on a
single thread, set background was their attempt at mimicking
multi-threading, it doesn't actually do much to mimic the benefits of
multi-threading though and if one puts this under so many procs it just
causes massive cpu overloads as set background take procs taking up too
much CPU in a single cycle and pushes it to the next cycle - this is
literally pushing everything to the next cycle until the CPU % just keep
going and going.

Turning set background off across the board will lower the total CPU
usage and on top of that make the profiling of CPU usage possible now
that the readings aren't being fucked up.