utils: Remove old license text from help & disclaimer file

The license text that we decided to remove was removed from the headers
of these files, but was still left in the help text.  Remove it from
those locations as well.

Change-Id: I0e1b3b79f1afa35e632c4a4dd09a8bf2b02eaa6d
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/12913
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
7 files changed