Removed an unused attribute
Removed an unused attribute


Former-commit-id: e5379052711fbe6886c74c07e8274abd3a519a3a [formerly 4dc8b8f408af2d655eb47a81aefc8feade506101] [formerly 4dc8b8f408af2d655eb47a81aefc8feade506101 [formerly 682a3a903e67fe7a79a6dfdc3190cfb99e85acee]]
Former-commit-id: ade2dedb43402a3b4602d346ccbbe4ab020f9181
Former-commit-id: a6bfc5c6f551d333befe4511491dfbcce3075245
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine