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


Former-commit-id: 91f7e5dff6593ee3d5d98713b39e9f7407b5dca3 [formerly c1729943225621f77b2f6984d35733db2452448d]
Former-commit-id: 795a68c560cc5a917fe33cd87bb903ea646eb528
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine