cleaned up namespaces in disaggregation example file
cleaned up namespaces in disaggregation example file


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Former-commit-id: 024e59b7cbd596964550dfedfc3da7ef32444dc9
Former-commit-id: 011cff5b001817ca5db69da2046a30bb320d774c
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine