remove active-tracking & docID recycling
remove active-tracking & docID recycling

this doesn't apply to us since we never remove items out of the index

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