[heterps]fix launch_utils.py. test=develop (#37752)

* fix launch_utils.py. test=develop

* fix launch_utils.py. test=develop

python/paddle/distributed/fleet/launch_utils.py

@@ -1180,18 +1180,14 @@ class ParameterServerLauncher(object):
                 _, self.current_node_ip = get_host_name_ip()
             else:
                 self.current_node_ip = pod_ip
-            if not self.distribute_mode == DistributeMode.PS_HETER:
             assert self.current_node_ip in self.node_ips, "Can't find your local ip {%s} in args.servers and args.workers ips: {%s}" \
                   % (self.current_node_ip, self.node_ips)
-        if self.current_node_ip in self.node_ips:
         self.node_rank = self.node_ips.index(self.current_node_ip)
         logger.debug(
             "parsed from args: node_ips:{} current_node_ip:{} node_rank:{}".
             format(self.node_ips, self.current_node_ip, self.node_rank))
 
     def start_ps(self):
-        if not self.current_node_ip in self.node_ips:
-            return
         cluster = Cluster(hdfs=None)
         server_rank = 0
         worker_rank = 0