Improved strip_dupl_sites [skip CI]
Improved strip_dupl_sites [skip CI]


Former-commit-id: aa9a34c327e28f38d1bb117b6c4fa90604823589 [formerly da03edec3de894c1abee4a93ab0b97f538e9d115]
Former-commit-id: 690b2ebf437e0f5eebaa7e4867b301372e7b3e9f
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine