MFC r340095: Remove apparently unused 0-byte files that cause grief on Windows

MFC r340095: Remove apparently unused 0-byte files that cause grief on Windows

r235274 added a sort regression test (it operates by comparing output
against GNU sort).  The commit included a number of 0-byte files, one
of which ends in a trailing . which reportedly breaks svn/git checkouts
on Windows.

It appears these were added accidentally, so just remove them.

PR:		232479

git-svn-id: svn://svn.freebsd.org/base/stable/10@341419 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f