Removed unneeded os.remove
Removed unneeded os.remove


Former-commit-id: 8415a9d2e172603851158beaf4f45aa6d3e560bd [formerly c5fc14a922c90417fc040d833cccbff150b2b58d]
Former-commit-id: 6797c22bf6e09d0a3425c0631fc4502bb0d4458a
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine