TileRecUtils: Fix duplicated Gaudi Property.

The TileCondToolTiming property was duplicated between TileRawChannelBuilderOpt2Filter and its base class TileRawChannelBuilder.

TileCalorimeter/TileRecUtils/TileRecUtils/TileRawChannelBuilderOpt2Filter.h

 /*
-  Copyright (C) 2002-2017 CERN for the benefit of the ATLAS collaboration
+  Copyright (C) 2002-2019 CERN for the benefit of the ATLAS collaboration
 */
 
 #ifndef TILERECUTILS_TILERAWCHANNELBUILDEROPT2FILTER_H
@@ -66,9 +66,6 @@ class TileRawChannelBuilderOpt2Filter: public TileRawChannelBuilder {
 
   private:
 
-    ToolHandle<TileCondToolTiming> m_tileToolTiming{this,
-        "TileCondToolTiming", "TileCondToolTiming", "Tile timing tool"};
-
     ToolHandle<ITileCondToolOfc> m_tileCondToolOfc{this,
         "TileCondToolOfc", "TileCondToolOfc", "Tile OFC tool"};