feat(weibo.py): update weibo.py

weibo.py

@@ -30,7 +30,6 @@ _URLS = {
     "test": _URL + "data/test.char.bmes",
 }
 
-
 class WeiboNamedEntities(datasets.GeneratorBasedBuilder):
     VERSION = datasets.Version("1.0.0")
 
@@ -114,7 +113,6 @@ class WeiboNamedEntities(datasets.GeneratorBasedBuilder):
             for line in f:
                 if len(line.strip()) == 0:
                     if len(example["text"]) > 0:
-                        example["text"] = "".join(example["text"])
                         yield _id, example
                         example = self._default_example()
                         _id += 1
@@ -127,5 +125,4 @@ class WeiboNamedEntities(datasets.GeneratorBasedBuilder):
                 example["text"].append(char)
                 example["labels"].append(label)
             if len(example["text"]) > 0:
-                example["text"] = "".join(example["text"])
                 yield _id, example