Remove text that paraphrases GPLv3 conditions.

COPYING

@@ -9,15 +9,6 @@ your option) any later version.
 See the file ‘LICENSE.GPL-3’ for the text of the GNU GPL version 3.
 If that file is not present, see <http://www.gnu.org/licenses/>.
 
-Modification and redistribution of ZeroTier One is permitted in source form.
-Binary distribution is permitted provided all copyright notices remain
-intact and any modifications to the source code are also distributed.
-
-ZeroTier One may not be embedded into any closed-source application (e.g. via
-linking), nor may closed-source derivatives be created, without a separately
-negotiated license from ZeroTier Networks LLC. See the terms of the GPLv3 for
-details.
-
 ..
     Local variables:
     coding: utf-8