Entry and OU shall not be singletons.

src/phi/ldap/async_model.py

@@ -55,12 +55,6 @@ class Entry(object):
 
     kind = None
     _name = None
-    _instance = None
-
-    def __new__(cls, *args, **kwargs):
-        if cls._instance is None:
-            cls._instance = object.__new__(cls)
-        return cls._instance
 
     @classmethod
     def name(cls):