Fix flake8 check fail issue

hub_module/modules/text/text_generation/plato2_en_base/utils/tokenization.py

@@ -79,22 +79,9 @@ def encode_ids(spm_model, text, sample=False):
 
 def convert_to_unicode(text):
     """Converts `text` to Unicode (if it's not already), assuming utf-8 input."""
-    if six.PY3:
-        if isinstance(text, str):
-            return text
-        elif isinstance(text, bytes):
-            return text.decode("utf-8", "ignore")
-        else:
-            raise ValueError("Unsupported string type: %s" % (type(text)))
-    elif six.PY2:
-        if isinstance(text, str):
-            return text.decode("utf-8", "ignore")
-        elif isinstance(text, unicode):
-            return text
-        else:
-            raise ValueError("Unsupported string type: %s" % (type(text)))
-    else:
-        raise ValueError("Not running on Python2 or Python 3?")
+    if isinstance(text, six.binary_type):
+        return text.decode("utf-8", "ignore")
+    return text
 
 
 def load_vocab(vocab_file):

hub_module/modules/text/text_generation/plato2_en_large/utils/tokenization.py

@@ -79,22 +79,9 @@ def encode_ids(spm_model, text, sample=False):
 
 def convert_to_unicode(text):
     """Converts `text` to Unicode (if it's not already), assuming utf-8 input."""
-    if six.PY3:
-        if isinstance(text, str):
-            return text
-        elif isinstance(text, bytes):
-            return text.decode("utf-8", "ignore")
-        else:
-            raise ValueError("Unsupported string type: %s" % (type(text)))
-    elif six.PY2:
-        if isinstance(text, str):
-            return text.decode("utf-8", "ignore")
-        elif isinstance(text, unicode):
-            return text
-        else:
-            raise ValueError("Unsupported string type: %s" % (type(text)))
-    else:
-        raise ValueError("Not running on Python2 or Python 3?")
+    if isinstance(text, six.binary_type):
+        return text.decode("utf-8", "ignore")
+    return text
 
 
 def load_vocab(vocab_file):