Remove an unused file.

Also remove a reference to it and two other files that have already
been removed in a script --- these files were problematic because they
weren't UTF-8.

Change-Id: Ibf597bac1903c34d8d0fe0a09615c42f24d4f23d

libc/tools/generate-NOTICE.py

@@ -121,7 +121,6 @@ for arg in args:
             try:
                 content = open(path, 'r').read().decode('utf-8')
             except:
-                # TODO: update hash.h, md5.c, and md5.h; upstream is probably UTF-8 already.
                 sys.stderr.write('warning: bad UTF-8 in %s\n' % path)
                 content = open(path, 'r').read().decode('iso-8859-1')