[CentOS] Hide CPU cores in system monitor

Mon Oct 15 20:16:39 UTC 2018
Elliott Balsley <elliott at altsystems.com>

In CentOS 7.3 the gnome-system-monitor shows one big graph for CPU usage.
Now in CentOS 7.5 I see a red box for each core.  On a machine with lots of
CPU cores, this is taking up too much screen real estate, so is there some
way to go back to the old behavior?