lib: Drop the version check from CFGLexer

lib/parsing/CFGLexer.py

@@ -81,7 +81,6 @@ class CFGLexer(Lexer):
 
     def __init__(self, input=None, output:TextIO = sys.stdout):
         super().__init__(input, output)
-        self.checkVersion("4.9.2")
         self._interp = LexerATNSimulator(self, self.atn, self.decisionsToDFA, PredictionContextCache())
         self._actions = None
         self._predicates = None