delete extra clear_model (#36656)

* gloo hdfs set check & gloo connect retry

* add vlog

* print gloo connect addr & add vlog

* .

* modify vlof

* modify vlog

* modify vlog

* Update __init__.py

deleted extra clear_model

python/paddle/fluid/incubate/fleet/parameter_server/pslib/__init__.py

@@ -544,18 +544,6 @@ class PSLib(Fleet):
             self._fleet_ptr.clear_model()
         self._role_maker._barrier_worker()
 
-    def clear_model(self):
-        """
-        clear_model() will be called by user. It will clear sparse model.
-        Examples:
-            .. code-block:: python
-              fleet.clear_model()
-        """
-        self._role_maker._barrier_worker()
-        if self._role_maker.is_first_worker():
-            self._fleet_ptr.clear_model()
-        self._role_maker._barrier_worker()
-
     def load_pslib_whitelist(self, table_id, model_path, **kwargs):
         """
         load pslib model for one table with whitelist