Removed unneeded code [skip hazardlib][demos]
Removed unneeded code [skip hazardlib][demos]


Former-commit-id: 05e7cb498189fdfff2f3770a10b96742d5efc8b8 [formerly 81ba675543a2c53759cddd55aa04135c5ffaacff]
Former-commit-id: 7d46300e316eee5fd628e64645893fc46a1ceb85
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine