Remove Unnecessary handling of special characters

convert_hf_to_gguf.py

@@ -525,15 +525,6 @@ def get_vocab_base(self) -> tuple[list[str], list[int], str]:
             else:
                 token: str = reverse_vocab[i]
                 if token in added_vocab:
-                    # We need to manually encode and decode the added tokens in case special characters
-                    # used for `\n` / `\t` have been manually added in the added tokens
-                    # To avoid unexpected issues - we make sure to encode single-char tokens
-                    if len(token) == 1:
-                        previous_token = token
-                        token = tokenizer.decode(tokenizer.encode(token, add_special_tokens=False))
-                        if previous_token != token:
-                            logger.info(f"{repr(previous_token)} is encoded and decoded back to {repr(token)} using AutoTokenizer")
-
                     if tokenizer.added_tokens_decoder[i].special or self.does_token_look_special(token):
                         toktypes.append(gguf.TokenType.CONTROL)
                     else: