Delete deprecated Proxies
The following deprecated proxies has been deleted:
GlyphLegacy
Glyph With Custom Source Legacy
plyreader
Legacy Resample With Dataset
UnstructuredGridBaseRepresentation
The following deprecated proxies will be removed in 5.12:
Extract Level (Legacy)
Gradient Of Unstructured DataSet
ProbeLineLegacy
GradientLegacy
Finally, Slice (demand-driven-composite)
has been deprecated and will be removed in 5.13.