How to delete an item by ID?

I accidentally spawned part of the texture from the oil rig. Namely, the fire at its end.

KILLER.[no id] spawned "militaryflamethrower.entity[9108519]" at (1821.8, 0.0, 1022.7)
Is there a command to delete by id? Remove 9108519

Doesn't anyone really know?

I'm not aware of any built in command that will delete an entity by id. What I do is I have a custom debug plugin with dozens of commands, among which is a command to delete entity by id.