paraview: update name of plugin to disable
paraview: update name of plugin to disable

ParaView changed the name of the plugin CoProcessingScriptGenerator to
CatalystScriptGenerator.  Update our CMake variable to turn off the
plugin under its new name.

OpenChemistry/tomviz-superbuild,cjh1/tomviz-superbuild,mathturtle/tomviz-superbuild,cjh1/tomviz-superbuild,OpenChemistry/tomviz-superbuild,mathturtle/tomviz-superbuild