lib: Strip quotes from quoted terminals in CFG

lib/parsing/parser.py

@@ -228,7 +228,7 @@ class DFABuilder(DFAListener):
                         name += str(value)
                 i += 1
 
-            return '"' + name + '"'
+            return name
 
     def exitProduction(self, ctx):
         state = State(self.visitStatename(ctx.statename(0)))