Hide 'no password' text for comments. It's already being shown for...

Hide 'no password' text for comments. It's already being shown for the_content; aligns it with .nocomments; fixes #13692.

git-svn-id: https://core.svn.wordpress.org/trunk@15125 1a063a9b-81f0-0310-95a4-ce76da25c4cd