[docs] remove pooling models from supported features (#358)

### [docs] remove pooling models from supported features

Following up a (late) discussion in #344 about removing the pooling
models from the list of supported models as not all all pooling
applications are supported, and we already have embedding models in that
list (see comment by @maxdebayser :
[link](https://github.com/vllm-project/vllm-spyre/pull/344/files#r2247822334))

---------

Signed-off-by: Yannick Schnider <[email protected]>

Author: yannicks1

docs/user_guide/supported_features.md

@@ -10,7 +10,6 @@ This table summarize the status of features on Spyre. By default, those features
 | Prompt Adapter                |   ⛔   | Being deprecated in vLLM [vllm#13981](https://github.com/vllm-project/vllm/issues/13981) |
 | Speculative Decoding          |   🗓️   |      |
 | Guided Decoding               |   🗓️   |      |
-| Pooling                       |   ✅   |      |
 | Enc-dec                       |   ⛔   | No plans for now |
 | Multi Modality                |   🗓️   |      |
 | LogProbs                      |   ✅   |      |