LZO and LZMA is only used for compressing point caches inside of Blender. As we already use ZSTD for compressing other data in Blender it makes sense to remove LZO and LZMA to simplify our library requirements (and lessen our library maintenance burden). I've talked to Sergey about this and he suggested that I leave the LZO/LZMA libraries and code around but effectively disabled until beta, so if there is a huge uproar, we can easily reinstate the support. Pull Request: https://projects.blender.org/blender/blender/pulls/141461