Docs fix + cleanup

lark/lexer.py

@@ -120,7 +120,7 @@ class Token(Str):
     Attributes:
         type: Name of the token (as specified in grammar)
         value: Value of the token (redundant, as ``token.value == token`` will always be true)
-        pos_in_stream: The index of the token in the text
+        start_pos: The index of the token in the text
         line: The line of the token in the text (starting with 1)
         column: The column of the token in the text (starting with 1)
         end_line: The line where the token ends

lark/utils.py

@@ -241,17 +241,6 @@ except ImportError:
             pass
 
 
-try:
-    compare = cmp
-except NameError:
-    def compare(a, b):
-        if a == b:
-            return 0
-        elif a > b:
-            return 1
-        return -1
-
-
 class Enumerator(Serialize):
     def __init__(self):
         self.enums = {}