internal/merge: remove InterfaceMaps benchmark (#3990)
internal/merge: remove InterfaceMaps benchmark (#3990)

Due to the fiddling with StartTimer/StopTimer in the inner loop, this
test ended up taking 5 minutes, even though the time per store size was
not that bad.

After playing with righting the wrong, I've concluded that we don't
gain too much from accurate numbers here -- less so than we did when
this change was introduced originally.

Signed-off-by: Stephan Renatus <0d0a21c7604d0d452d5c1019ca18e48a97a9a057@gmail.com>
tsandall/opa,tsandall/opa,open-policy-agent/opa,open-policy-agent/opa,tsandall/opa,open-policy-agent/opa,tsandall/opa,tsandall/opa,open-policy-agent/opa,open-policy-agent/opa,tsandall/opa,open-policy-agent/opa