Removed an unused (and ugly) hashing function
Removed an unused (and ugly) hashing function


Former-commit-id: 72b1b47185390c36af12082627e3a102d21894c6 [formerly 72b1b47185390c36af12082627e3a102d21894c6 [formerly 1f50b7e825f8bfe911ea1fc9b48fb58403f1fa4d]]
Former-commit-id: d7b5dd8dcc3de1bae43ee8126671ae6379c11f9b
Former-commit-id: 16859178a6f515150a93beea000b112d9df8a88a
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine