Good thing about this story is - it's very tiny, hence doesn't bore. Pretty much everything here has already been told even in Clarke's other stories.
Plot is essentially the same as that of Clarke's "The Star". A big explosion that kills an entire sentient race; another race elsewhere in galaxy learns of it, & mulls over it.
Only the explosion is of earth, taking moon with it - "Double Nova". Probably during an industrial accident involving the tapping of zero-point energy; story only conjectures it might be an accident.
Story is told by a "germanium-based consciousness" somewhere nearby in galaxy - based on intercepted radio transmissions from earth, & also by observing the "Double Nova".
Their reaction is: good riddance (hence the title). Who cares for creatures that have recorded "countless episodes of violence, against their own species and the numerous others that occupied their planet".
- Arthur Clarke's novel "The Songs of Distant Earth": Humans tap zero-point energy to power interstellar travel when Sun goes Nova.
Improving the Neighborhood, short story, review
First published: Nature magazine, 4th November 1999. "First science fiction Nature ever published."
The story appears in the following collections.