Remove SIGHUP registration in the Engine
Remove SIGHUP registration in the Engine


Former-commit-id: 3df9744c91c58df61ce484eb562ce8188cca7fe7 [formerly 47fcfbd82c4225c5f1843d251356825fe761ff45] [formerly 47fcfbd82c4225c5f1843d251356825fe761ff45 [formerly 871af4463f00c21d89837f8119007a407f58353d]]
Former-commit-id: 24c27d99123e5e91f0b64f7ac08c7287c0e246d1
Former-commit-id: b6405cc3154728bfcd67929858398228fccf6d52
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine