Removed unnecessary exposure file
Removed unnecessary exposure file


Former-commit-id: 730451bebe56e7ff49f34d7faddc16cdfcfe0ee5 [formerly 3143576f6630328a691693c4b2d18a2da4846891]
Former-commit-id: 2f6b3e85cb1064dd39ca75411d228b94d9fcc43e
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine