[Docs][API] Remove warning about LoRARequest being internal-only (#30774)

Signed-off-by: Mark McLoughlin <markmc@redhat.com>

vllm/lora/request.py

@@ -14,11 +14,6 @@ class LoRARequest(
     """
     Request for a LoRA adapter.
 
-    Note that this class should be used internally. For online
-    serving, it is recommended to not allow users to use this class but
-    instead provide another layer of abstraction to prevent users from
-    accessing unauthorized LoRA adapters.
-
     lora_int_id must be globally unique for a given adapter.
     This is currently not enforced in vLLM.
     """