remove some more bsddb references
diff --git a/Doc/library/dbm.rst b/Doc/library/dbm.rst
index 09069e8..932c2a7 100644
--- a/Doc/library/dbm.rst
+++ b/Doc/library/dbm.rst
@@ -268,9 +268,9 @@
database modules.
The :mod:`dbm.dumb` module provides a persistent dictionary-like interface which
-is written entirely in Python. Unlike other modules such as :mod:`gdbm` and
-:mod:`bsddb`, no external library is required. As with other persistent
-mappings, the keys and values must always be strings.
+is written entirely in Python. Unlike other modules such as :mod:`gdbm` no
+external library is required. As with other persistent mappings, the keys and
+values must always be strings.
The module defines the following: