Fixed -Wtautological-constant-compare warning; removed useless size check

Filters/General/vtkCellTreeLocator.cxx

@@ -417,10 +417,6 @@ class vtkCellTreeBuilder
     void Build( vtkCellTreeLocator *ctl, vtkCellTreeLocator::vtkCellTree& ct, vtkDataSet* ds )
     {
       const vtkIdType size = ds->GetNumberOfCells();
-      if( size > std::numeric_limits<vtkIdType>::max() )
-      {
-        vtkGenericWarningMacro("Too many cells.");
-      }
       double cellBounds[6];
       this->m_pc.resize(size);