Are ParaView Guide books deprecated?

Why do we still have the ParaView books (v 4.3, no less) still linked off of the ParaView website?

paraview.org/ Resources/ ParaView Guide.

The actual Paraview Guide is now online, found here: https://docs.paraview.org/en/latest/

@utkarsh.ayachit @cory.quammen @Kenneth_Moreland

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