Change uninstall license (with permission)

Didn't realize the work was AGPL, relicensed to GPLv3 with consent of the
author.

uninstall.py

@@ -11,7 +11,7 @@
 # Written for McGill University by James Shubin <purpleidea@gmail.com>
 #
 # This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as published by
+# it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
 #
@@ -20,7 +20,7 @@
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU Affero 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/>.
 
 # created 2009/10/10, James Shubin