Remove unused code

DataManager.cpp

@@ -32,7 +32,6 @@ void DataManager::init() {
   root = NULL;
   oldNumChunks = 0;
   chunkRoots = NULL;
-  cleanupTreePieces = true;
 #ifdef CUDA
   treePiecesDone = 0;
   treePiecesDonePrefetch = 0;
@@ -162,7 +161,6 @@ void DataManager::notifyPresence(Tree::GenericTreeNode *root, TreePiece *tp) {
 /// \brief Clear registeredTreePieces on this node.
 void DataManager::clearRegisteredPieces(const CkCallback& cb) {
     registeredTreePieces.removeAll();
-    cleanupTreePieces = true;
     contribute(cb);
 }
 
@@ -1003,7 +1001,6 @@ void DataManager::transferParticleVarsBack(){
     cudaFree(d_localVars);
     cudaFree(d_remoteMoments);
     cudaFree(d_remoteParts); 
-    cleanupTreePieces = true;
 
 #ifdef CUDA_PRINT_ERRORS
     printf("transferParticleVarsBack: %s\n", cudaGetErrorString( cudaGetLastError() ) );

DataManager.h

@@ -77,9 +77,6 @@ class DataManager : public CBase_DataManager {
 	/// A list of roots of the TreePieces in this node
 	// holds chare array indices of registered treepieces
 	CkVec<TreePieceDescriptor> registeredTreePieces;
-       /// Signal whether registeredTreePieces needs to be cleaned
-       /// when combining local trees
-       bool cleanupTreePieces;
 #ifdef CUDA
 	//CkVec<int> registeredTreePieceIndices;
         /// @brief counter for the number of tree nodes that are