Bug 736947  uncovered that we have a number of dead
references to the "graphite" module, and related code.
The dead code should be removed.


There are at least 12 files with references after the fix
to  bug 736947 :
    cbuildbot/stages/report_stages.py
    lib/cidb.py
    lib/cros_test_lib.py
    lib/metadata_lib.py
    lib/graphite_lib/statsd_mock.py
    lib/graphite_lib/es_utils.py
    lib/graphite_lib/elasticsearch_mock_unittest.py
    lib/graphite_lib/stats.py
    lib/graphite_lib/statsd_mock_unittest.py
    lib/graphite_lib/elasticsearch_mock.py
    lib/graphite.py
    scripts/cbuildbot.py