Remove unused file

This file is unused and has been last modified two years ago. Furthermore it won't evne work anymore properly because it uses things  like `CONFIG_DATEFORMAT` which are gone a long time ago...

apps/files/settings.php

@@ -1,54 +0,0 @@
-<?php
-
-/**
-* ownCloud - ajax frontend
-*
-* @author Robin Appelman
-* @copyright 2010 Robin Appelman icewind1991@gmail.com
-*
-* This library is free software; you can redistribute it and/or
-* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
-* License as published by the Free Software Foundation; either
-* version 3 of the License, or any later version.
-*
-* This library 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.
-*
-* You should have received a copy of the GNU Affero General Public
-* License along with this library.  If not, see <http://www.gnu.org/licenses/>.
-*
-*/
-
-// Check if we are a user
-OCP\User::checkLoggedIn();
-
-// Load the files we need
-OCP\Util::addStyle( "files", "files" );
-OCP\Util::addscript( "files", "files" );
-
-// Load the files
-$dir = isset( $_GET['dir'] ) ? $_GET['dir'] : '';
-
-$files = array();
-foreach( \OC\Files\Filesystem::getDirectoryContent( $dir ) as $i ) {
-	$i["date"] = date( $CONFIG_DATEFORMAT, $i["mtime"] );
-	$files[] = $i;
-}
-
-// Make breadcrumb
-$breadcrumb = array();
-$pathtohere = "/";
-foreach( explode( "/", $dir ) as $i ) {
-	if( $i != "" ) {
-		$pathtohere .= "$i/";
-		$breadcrumb[] = array( "dir" => $pathtohere, "name" => $i );
-	}
-}
-
-// return template
-$tmpl = new OCP\Template( "files", "index", "user" );
-$tmpl->assign( 'files', $files );
-$tmpl->assign( "breadcrumb", $breadcrumb );
-$tmpl->printPage();