GMEdit’s Global Search (Ctrl+Shift+F) has a “ignore comments” flag that can be used to quickly find lines that were not commented out. GMEdit also shows little red dots on scripts/objects that have “live” code in them.
It is worth noting that the current 2.3 version of GMLive is also much lighter (scripts/events do not get compiled until they are changed for the first time) so it’s cheaper to forget live_calls in places.