delete not needed class

Signed-off-by: tobiasKaminsky <tobias@kaminsky.me>

src/main/java/com/owncloud/android/ui/adapter/GroupAdapter.java

@@ -1,33 +0,0 @@
-/**
- *   ownCloud Android client application
- *
- *   Copyright (C) 2015  ownCloud Inc.
- *
- *   This program is free software: you can redistribute it and/or modify
- *   it under the terms of the GNU General Public License version 2,
- *   as published by the Free Software Foundation.
- *
- *   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 General Public License for more details.
- *
- *   You should have received a copy of the GNU General Public License
- *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- */
-package com.owncloud.android.ui.adapter;
-
-import java.util.ArrayList;
-import java.util.List;
-
-public class GroupAdapter {
-
-    public String string;
-    public final List<String> children = new ArrayList<String>();
-
-    public GroupAdapter(String string) {
-        this.string = string;
-    }
-
-}