## Delete deprecated Proxies

The following deprecated proxies has been deleted:

1) `GlyphLegacy`
2) `Glyph With Custom Source Legacy`
3) `plyreader`
4) `Legacy Resample With Dataset`
5) `UnstructuredGridBaseRepresentation`

The following deprecated proxies will be removed in 5.12:

1) `Extract Level (Legacy)`
2) `Gradient Of Unstructured DataSet`
3) `ProbeLineLegacy`
4) `GradientLegacy`

Finally, `Slice (demand-driven-composite)` has been deprecated and will be removed in 5.13.
