remove branch within the branch


git-svn-id: svn+ssh://svn.cern.ch/reps/atlasoff/Control/StoreGate/branches/StoreGate-02-39-07-branch@563840 4525493e-7705-40b1-a816-d608a930855b
Arena stuff moved to AthAllocators


git-svn-id: svn+ssh://svn.cern.ch/reps/atlasoff/Control/StoreGate/branches/StoreGate-02-39-07-branch@563842 4525493e-7705-40b1-a816-d608a930855b