Remove stale code
Remove stale code


Former-commit-id: e2e612e740a63bb10638923019c98df37be16a92 [formerly 3fcea4e530886d2e46a279efc57b1fecd184fe47]
Former-commit-id: 8fe2ebca553cef7daac8bf4ec78733cbe3068ee6
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine