chore(llama-ggml): drop deprecated backend

The GGML format is now dead, since in the next version of LocalAI we
already bring many breaking compatibility changes, taking the occasion
also to drop ggml support (pre-gguf).

Signed-off-by: Ettore Di Giacinto <mudler@localai.io>

docs/content/docs/features/text-generation.md

@@ -124,7 +124,7 @@ Note: rwkv models needs to specify the backend `rwkv` in the YAML config files a
 
 {{% alert note %}}
 
-The `ggml` file format has been deprecated. If you are using `ggml` models and you are configuring your model with a YAML file, specify, use the `llama-ggml` backend instead. If you are relying in automatic detection of the model, you should be fine. For `gguf` models, use the `llama` backend. The go backend is deprecated as well but still available as `go-llama`. The go backend supports still features not available in the mainline: speculative sampling and embeddings.
+The `ggml` file format has been deprecated. If you are using `ggml` models and you are configuring your model with a YAML file, specify, use a LocalAI version older than v2.25.0. For `gguf` models, use the `llama` backend. The go backend is deprecated as well but still available as `go-llama`.
 
 {{% /alert %}}
 
@@ -175,25 +175,12 @@ name: llama
 backend: llama
 parameters:
   # Relative to the models path
-  model: file.gguf.bin
-```
-
-In the example above we specify `llama` as the backend to restrict loading `gguf` models only. 
-
-For instance, to use the `llama-ggml` backend for `ggml` models:
-
-```yaml
-name: llama
-backend: llama-ggml
-parameters:
-  # Relative to the models path
-  model: file.ggml.bin
+  model: file.gguf
 ```
 
 #### Reference
 
 - [llama](https://github.com/ggerganov/llama.cpp)
-- [binding](https://github.com/go-skynet/go-llama.cpp)
 
 
 ### exllama/2