Update expected test output

Update expected test output

It's no longer a "problem" to have the same name listed with no prefix
and a "hgext." prefix.

--- a/tests/test-bad-extension.out	Mon Jul 30 14:53:03 2007 -0700
+++ b/tests/test-bad-extension.out	Mon Jul 30 20:48:50 2007 -0700
@@ -1,5 +1,4 @@
 *** failed to import extension badext: bit bucket overflow
-extension 'hgext.gpg' overrides commands: sigs sigcheck sign
 hg help [COMMAND]
 
 show help for a command, extension, or list of commands