CaloClusterMomentStore revert changes to special ctor/dtor code

CaloClusterMomentStore revert changes to special ctor/dtor code

I am not fully online yet, but seems we get some test failures after some recent changes .

12 CaloClusterMomentStore::CaloClusterMomentIterator::CaloClusterMomentIterator (iStore=<error reading variable: Cannot access memory at address 0x20>, this=0x56cd1468) at /build/atnight/localbuilds/nightlies/Athena/master/athena/Calorimeter/CaloEvent/CaloEvent/CaloClusterMomentStore.h:59
#13 CaloClusterMomentStore::begin (this=0x0) at /build/atnight/localbuilds/nightlies/Athena/master/athena/Calorimeter/CaloEvent/CaloEvent/CaloClusterMomentStore.h:222

The code seems to have been a bit special at the dtor lever at least So lets revert those changes.

ping @fwinkl