searchcommands: don't use deprecated BaseException.message

Author: xrmx

splunklib/searchcommands/validators.py

@@ -95,10 +95,7 @@ def __call__(self, value):
         try:
             return Code.object(compile(value, 'string', self._mode), six.text_type(value))
         except (SyntaxError, TypeError) as error:
-            if six.PY2:
-                message = error.message
-            else:
-                message = str(error)
+            message = str(error)
 
             six.raise_from(ValueError(message), error)