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


Former-commit-id: 80df31c4e888c94080acc449c48f65cd476286f7 [formerly 69b481b7fe6c30752bb53f0ae6023aed5e7e55ec]
Former-commit-id: c541267a8a5fce22786e1c1ec9f03eca409080c2
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine