repo: remove bindings that have no maintainer (#2429)

The C#, Java, and Go bindings are now removed from the repo.

Signed-off-by: Jared Van Bortel <jared@nomic.ai>

gpt4all-bindings/README.md

@@ -1,3 +1,21 @@
-# GPT4All Bindings
-This directory will contain language specific bindings on top of the C/C++ model backends.
-We will have one directory per language binding (e.g. Python, Typescript, Golang, etc.).
+# GPT4All Language Bindings
+These are the language bindings for the GPT4All backend. They provide functionality to load GPT4All models (and other llama.cpp models), generate text, and (in the case of the Python bindings) embed text as a vector representation.
+
+See their respective folders for language-specific documentation.
+
+### Languages
+- [Python](https://github.com/nomic-ai/gpt4all/tree/main/gpt4all-bindings/python) (Nomic official, maintained by [@cebtenzzre](https://github.com/cebtenzzre))
+- [Node.js/Typescript](https://github.com/nomic-ai/gpt4all/tree/main/gpt4all-bindings/typescript) (community, maintained by [@jacoobes](https://github.com/jacoobes) and [@iimez](https://github.com/iimez))
+
+<br/>
+<br/>
+
+<details><summary><b>Archived Bindings</b></summary>
+<br/>
+
+The following bindings have been removed from this repository due to lack of maintenance. If adopted, they can be brought back&mdash;feel free to message a developer on Dicsord if you are interested in maintaining one of them. Below are links to their last available version (not necessarily the last working version).
+- C#: [41c9013f](https://github.com/nomic-ai/gpt4all/tree/41c9013fa46a194b3e4fee6ced1b9d1b65e177ac/gpt4all-bindings/csharp)
+- Java: [41c9013f](https://github.com/nomic-ai/gpt4all/tree/41c9013fa46a194b3e4fee6ced1b9d1b65e177ac/gpt4all-bindings/java)
+- Go: [41c9013f](https://github.com/nomic-ai/gpt4all/tree/41c9013fa46a194b3e4fee6ced1b9d1b65e177ac/gpt4all-bindings/golang)
+
+</details>