Drop the execcomponents ref.

Author: ericsnowcurrently

Doc/howto/multiple-interpreters.rst

@@ -25,9 +25,7 @@ comparisons with Python's various existing concurrency models.
 
    :mod:`concurrent.interpreters`
 
-   :ref:`execcomponents`
-       more details about how interpreters fit into
-       Python's execution model
+   .. XXX Add a ref to the upcoming lang ref runtime components section.
 
    .. XXX Add a reference to the upcoming concurrency HOWTO doc.
 

Doc/library/concurrent.interpreters.rst

@@ -31,6 +31,8 @@ Actual concurrency is available separately through
    :class:`~concurrent.futures.InterpreterPoolExecutor`
       combines threads with interpreters in a familiar interface.
 
+   .. XXX Add a ref to the upcoming lang ref runtime components section.
+
    :ref:`multiple-interpreters-howto`
        how to use multiple interpreters