Removed whats-new-2.1 [skip CI]
Removed whats-new-2.1 [skip CI]


Former-commit-id: 147700e93ba86d7849b656f520711b1588b041a0 [formerly 147700e93ba86d7849b656f520711b1588b041a0 [formerly 2ab8015d036975324c875d3b9766852aab545c3c]]
Former-commit-id: b4e4469f4c437d96d23f8f51b177bcd7834d2da4
Former-commit-id: ab734f3a2381adfc20bfb072fa5381e918cb168c
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine