refactor: [torrust#1495] remove test for SwarmHandle

Integration tests will be removed becuase unit tests have been added.
Besides, there is no point in testing only the wrapper. SwarmHandle in
only a wrapper over Swarm.

Author: josecelano

packages/torrent-repository/tests/common/mod.rs

@@ -1,2 +1 @@
-pub mod torrent;
 pub mod torrent_peer_builder;