remove no longer needed backwards compat for collections.abc.MutableMapping

diff --git a/dns/namedict.py b/dns/namedict.py
index ce51e5246fe3297a4586f11f564c8caccdef25e2..4c8f9abdaa8cfca088f8ad51f7bf44dfc1433875 100644 (file)
--- a/dns/namedict.py
+++ b/dns/namedict.py
@@ -27,10 +27,8 @@
 
 """DNS name dictionary"""
 
-try:
-    from collections.abc import MutableMapping
-except ImportError:
-    from collections import MutableMapping
+from collections.abc import MutableMapping
+
 import dns.name