Removed unused import [skip CI]
Removed unused import [skip CI]


Former-commit-id: 7e4db5000ed6b07aefca39319006c07fd4211c71 [formerly 2acf40d8ddd7fc12ac08682ce5a6c1436d67d54a]
Former-commit-id: 0a45c28705501b0018783e6ca69259ea5ddaf1de
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine