contrib/import-checker.py

--- a/contrib/import-checker.py	Mon Jan 07 18:41:53 2019 -0500
+++ b/contrib/import-checker.py	Mon Jan 07 18:43:10 2019 -0500
@@ -40,8 +40,6 @@
     # third-party imports should be directly imported
     'mercurial.thirdparty',
     'mercurial.thirdparty.attr',
-    'mercurial.thirdparty.cbor',
-    'mercurial.thirdparty.cbor.cbor2',
     'mercurial.thirdparty.zope',
     'mercurial.thirdparty.zope.interface',
 )