remove check for max_wire_version on OpError

Author: prashantmital

pymongo/change_stream.py

@@ -301,8 +301,6 @@ def try_next(self):
             self._resume()
             change = self._cursor._try_next(False)
         except OperationFailure as exc:
-            if exc.max_wire_version is None:
-                raise
             is_resumable = ((exc.max_wire_version >= 9 and
                              exc.has_error_label("ResumableChangeStreamError")) or
                             (exc.max_wire_version < 9 and