Use __delete__, not __del__, in class property. See comments on #199.

Author: Guido van Rossum

stdlib/2.7/__builtin__.pyi

@@ -655,7 +655,7 @@ class property:
     def deleter(self, fdel: Callable[[Any], None]) -> property: ...
     def __get__(self, obj: Any, type: type=None) -> Any: ...
     def __set__(self, obj: Any, value: Any) -> None: ...
-    def __del__(self, obj: Any) -> None: ...
+    def __delete__(self, obj: Any) -> None: ...
 
 long = int
 bytes = str

stdlib/3/builtins.pyi

@@ -630,7 +630,7 @@ class property:
     def deleter(self, fdel: Callable[[Any], None]) -> property: ...
     def __get__(self, obj: Any, type: type=None) -> Any: ...
     def __set__(self, obj: Any, value: Any) -> None: ...
-    def __del__(self, obj: Any) -> None: ...
+    def __delete__(self, obj: Any) -> None: ...
 
 NotImplemented = ...  # type: Any