Removed an unused prefilter
Removed an unused prefilter


Former-commit-id: 95f2e3b4818be2e358fa5c31eaea9ed68fc84a7a [formerly fb7706dcfd09ddc001e9f9e0bded8f8cb2f9f186]
Former-commit-id: c3245921cc9f70131ccce6c3b605f73927a520c0
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine