remove idx unit tests
remove idx unit tests

OOM-Killer/metrictank,replay/metrictank,OOM-Killer/metrictank,replay/metrictank,OOM-Killer/metrictank,raintank/raintank-metric,raintank/raintank-metric,raintank/raintank-metric,raintank/metrictank,replay/metrictank,raintank/metrictank,raintank/metrictank,replay/metrictank,raintank/metrictank