Removed a redundant check from calc_mode db constraints
Removed a redundant check from calc_mode db constraints


Former-commit-id: e521006a14ba84f886d917036dffccf979849e2c [formerly bff54b1c5cc0796555f79f0c543242a17bcf025b]
Former-commit-id: c33db0a8be5a6a94673200dda0126b50546489c5
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine