BSSGP/IuUP: Fix license disclaimer copy+paste

The license disclaimer already stated GPLv2-or-later, it just stated
confusingly you should look at the AGPL for reference.  Fix that.

Change-Id: I673c5c177a8e4010921f1fed747ce376f274da54
diff --git a/library/BSSGP_Helper.cc b/library/BSSGP_Helper.cc
index 6a98eb4..2783d46 100644
--- a/library/BSSGP_Helper.cc
+++ b/library/BSSGP_Helper.cc
@@ -230,9 +230,9 @@
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
+ * GNU General Public License for more details.
  *
- * You should have received a copy of the GNU Affero General Public License
+ * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */