bpo-40234: Revert "bpo-37266: Daemon threads are now denied in subinterpreters (GH-14049)" (GH-19456)

This reverts commit 066e5b1a917ec2134e8997d2cadd815724314252.

1 files changed, 0 insertions, 8 deletions

diff --git a/Doc/library/threading.rst b/Doc/library/threading.rst
index 1e90294142..3a446adfac 100644
--- a/Doc/library/threading.rst
+++ b/Doc/library/threading.rst
@@ -280,8 +280,6 @@ since it is impossible to detect the termination of alien threads.
    base class constructor (``Thread.__init__()``) before doing anything else to
    the thread.
 
-   Daemon threads must not be used in subinterpreters.
-
    .. versionchanged:: 3.3
       Added the *daemon* argument.
 
@@ -296,12 +294,6 @@ since it is impossible to detect the termination of alien threads.
       This method will raise a :exc:`RuntimeError` if called more than once
       on the same thread object.
 
-      Raise a :exc:`RuntimeError` if the thread is a daemon thread and the
-      method is called from a subinterpreter.
-
-      .. versionchanged:: 3.9
-         In a subinterpreter, spawning a daemon thread now raises an exception.
-
    .. method:: run()
 
       Method representing the thread's activity.