How to delete an entity in GMod
With sv_cheats 1 on, look at the entity and type ent_remove in your game console to delete it. Add a name or class to remove those instead.
ent_remove
Removes the entity you are looking at, or the named entities; needs sv_cheats 1.
ent_remove [name|class] Examples
ent_remove Delete what you are aiming at.
Arguments
name|classOptional- Entity name or class, empty for the one under your crosshair.
What it does
With no argument it deletes whatever is under your crosshair.
The game's own description: Removes the given entity(s) Arguments: {entity_name} / {class_name} / no argument picks what player is looking at
Run it on your server
On a SLASHPLAY server, type it in the Console tab of the server page; the reply shows right under it. A value set there lasts until the server restarts. To keep it, add the line to garrysmod/cfg/server.cfg. New to this? Start a GMod server first.
Your own
GMod server.
From $0.03 an hour, only while it runs. New accounts get 6 free tokens.