Update tokenizer.json

tokenizer.json

@@ -80,10 +80,7 @@
       "9": 9,
       "Ċ": 10,
       "user": 11,
-      "assistant": 12,
-      "<|endoftext|>": 13,
-      "<|im_start|>": 14,
-      "<|im_end|>": 15
+      "assistant": 12
     },
     "unk_token": "<|endoftext|>"
   }