unregisterSystem method
Unregister a system by name
Returns true if the system was found and removed.
Implementation
bool unregisterSystem(String name) {
if (!_systems.containsKey(name)) {
return false;
}
final system = _systems[name];
_systems.remove(name);
_systemsByType.remove(system.runtimeType);
debugPrint('System unregistered: $name');
return true;
}