Removed a region_constraint casing issues [skip hazardlib]
Removed a region_constraint casing issues [skip hazardlib]


Former-commit-id: 2c8aba3beaf6f5977e68088fc6e76f96dd6038f0 [formerly 49e46dd35366bcd376f9480577c8cac1d02c957c]
Former-commit-id: c9a2e29282ea62ee724123c9c608cf49b85b56be
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine