client: code cleanup

neo/client/app.py

@@ -115,10 +115,6 @@ class Application(object):
         # _connecting_to_master_node is used to prevent simultaneous master
         # node connection attemps
         self._connecting_to_master_node = Lock()
-        # _nm ensure exclusive access to the node manager
-        lock = Lock()
-        self._nm_acquire = lock.acquire
-        self._nm_release = lock.release
         self.compress = compress
         registerLiveDebugger(on_log=self.log)
 

neo/client/pool.py

@@ -123,10 +123,9 @@ class ConnectionPool(object):
             cell_list.sort(key=self.getCellSortKey)
             for cell in cell_list:
                 node = cell.getNode()
-                if node.isRunning():
                 conn = getConnForNode(node)
                 if conn is not None:
-                        yield (node, conn)
+                    yield node, conn
                 # Re-check if node is running, as our knowledge of its
                 # state can have changed during connection attempt.
                 elif node.isRunning():