enc-backup: fix copyright notices

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/BackupActivity.java

@@ -1,7 +1,5 @@
 /*
- * Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de>
- * Copyright (C) 2014 Vincent Breitmoser <v.breitmoser@mugenguild.com>
- * Copyright (C) 2011 Senecaso
+ * Copyright (C) 2015 Vincent Breitmoser <v.breitmoser@mugenguild.com>
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/BackupCodeEntryFragment.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2015 Dominik Schürmann <dominik@dominikschuermann.de>
+ * Copyright (C) 2015 Vincent Breitmoser <v.breitmoser@mugenguild.com>
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by