src/transformers/models/deit/modeling_tf_deit.py/TFDeiTMainLayer/_prune_heads
class TFDeiTMainLayer:    def _prune_heads(self, heads_to_prune):
        """
        Prunes heads of the model. heads_to_prune: dict of {layer_num: list of heads to prune in this layer} See base
        class PreTrainedModel
        """
        raise NotImplementedError