Fix build issues with deprecated vtkOpenGLPolyDataMapper.

One TCL enabled systems, if the empty cxx file was added, the wrapped logic
would end up generating code that fails to link when VTK_LEGACY_REMOVE was set.
Fixed that by simply excluding vtkOpenGLPolyDataMapper if VTK_LEGACY_REMOVE is
ON.

Change-Id: I1571fd3f39606ecfcbd1daa65ddd549f59fe0500
Merge topic 'deprecate_vtkOpenGLPolyDataMapper' into master

2be768b2 Fix build issues with deprecated vtkOpenGLPolyDataMapper.