Issue #19691: remove outdated mention about RuntimeError
diff --git a/Doc/library/exceptions.rst b/Doc/library/exceptions.rst
index a3e89ca..e3e6536 100644
--- a/Doc/library/exceptions.rst
+++ b/Doc/library/exceptions.rst
@@ -286,8 +286,7 @@
Raised when an error is detected that doesn't fall in any of the other
categories. The associated value is a string indicating what precisely went
- wrong. (This exception is mostly a relic from a previous version of the
- interpreter; it is not used very much any more.)
+ wrong.
.. exception:: StopIteration