dropped left over arg doc

src/transformers/models/mamba/configuration_mamba.py

@@ -81,8 +81,6 @@ class MambaConfig(PretrainedConfig):
             Whether or not the cache should be used.
         use_mambapy (`bool`, *optional*, defaults to `False`):
             Determines the fallback strategy during training if the CUDA-based official implementation of Mamba is not avaiable. If `True`, the mamba.py implementation is used. If `False`, the naive and slower implementation is used. Consider switching to the naive version if memory is limited.
-        ignore_keys_for_inference (`List[str]`, *optional*, defaults to `[]`):
-
     Example:
 
     ```python