TileEvent: Fix const correctness violation

Tile raw data containers allow to clear their collections.
But implementation of this functionality violates const correctness.
And since it seems not to be used at all this functionality has been removed.

TileCalorimeter/TileEvent/TileEvent/TileRawDataContainer.h

@@ -56,9 +56,6 @@ public:
     void initialize(bool createColl, TYPE type,
                     SG::OwnershipPolicy ownPolicy=SG::OWN_ELEMENTS);
 
-    // clear all collections
-    void clear();
-  
     inline TYPE get_hashType() const { return this->m_hashFunc.type(); }
     inline UNIT get_unit() const { return this->m_unit; }
     inline void set_unit(UNIT unit) { m_unit=unit; }

TileCalorimeter/TileEvent/TileEvent/TileRawDataContainer.icc

@@ -75,21 +75,6 @@ TileRawDataContainer<TCOLLECTION>::TileRawDataContainer(bool createColl,
     return; 
 }
 
-template <typename TCOLLECTION> 
-void TileRawDataContainer<TCOLLECTION>::clear()
-{
-    TContainer_const_iterator it1 = this->begin();
-    TContainer_const_iterator it2 = this->end();
-
-    for(;it1!=it2;++it1){
-        const TCOLLECTION * const_coll = *it1; 
-        TCOLLECTION * coll = const_cast<TCOLLECTION *>(const_coll);
-        coll->clear();
-    }
-
-    return; 
-}
-
                               
 template <typename TCOLLECTION> 
 void TileRawDataContainer<TCOLLECTION>::print() const