Removed logging initialization from run_tests.py.
Removed logging initialization from run_tests.py.

Doesn't seem necessary and was preventing the script from generating any output.


Former-commit-id: 8a4b29c2e771bb29d878cdf72b3689e9839f8c48
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine