I agree but the update wasn't well done, they made some "fixes" by spawning entities through vscript, since they aren't allowed to recompile the map, so people can't use stripper anymore to remove some unwanted changes.
Also there is no pattern in their naming entities, even with your code you can remove things that are not from update.
They added 1300+ entities through vscript, is kind impossible to know what should suppose to exists and which not. Also I still found some weird spots that they didn't fixed and seems that the update brought some other more.
Anyway I hope that all these posts help people in future.
Note: In your solution, you should use SpawnPost instead of creating a 0.1 timer.