How to destroy an empty Quarry

banished

How can I destroy a Quarry where no Stonecutter is working anymore (0% of stones remaining)?

Can I reuse this footprint for something else, like a fish pond or a stock pile?

You cannot reuse the land. The quarry leaves behind a permanent large hole in the ground. The tooltip already tells you this:

Quarry [8] Used to mine stone from the ground.

Quarry [8]

Used to mine stone from the ground.
Quarries cannot be removed once placed.