Removed unused all_equal [skip CI]
Removed unused all_equal [skip CI]


Former-commit-id: ac07b26cbdf6a3903d0432354b76c34211debfc9 [formerly bf263ec53f53dc0d380d1b68c0489c34fea63227]
Former-commit-id: cc845990d426959ecd772e576306fbfb82b593db
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine