remove outdated bra file
remove outdated bra file

it was written for an only version of raintank-metric
metric-tank is now much more stateful and restarting it willy nilly
doesn't often make sense anymore.

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