remove unused namespace declarations

src/main/res/layout/files.xml

@@ -18,7 +18,6 @@
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
   -->
 <android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
-                                        xmlns:app="http://schemas.android.com/apk/res-auto"
     android:id="@+id/drawer_layout"
     android:layout_width="match_parent"
     android:layout_height="match_parent"

src/main/res/layout/toolbar_user_information.xml

@@ -41,7 +41,6 @@
         android:gravity="bottom">
 
         <RelativeLayout
-            xmlns:android="http://schemas.android.com/apk/res/android"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:layout_marginBottom="12dp"