diff --git a/mod/wall_attach.php b/mod/wall_attach.php
deleted file mode 100644
index 289c024df..000000000
--- a/mod/wall_attach.php
+++ /dev/null
@@ -1,142 +0,0 @@
-<?php
-/**
- * @copyright Copyright (C) 2010-2022, the Friendica project
- *
- * @license GNU AGPL version 3 or any later version
- *
- * 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 the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * 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 Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- *
- */
-
-use Friendica\App;
-use Friendica\Core\Logger;
-use Friendica\Core\System;
-use Friendica\Database\DBA;
-use Friendica\DI;
-use Friendica\Model\Attach;
-use Friendica\Model\User;
-use Friendica\Util\Strings;
-
-function wall_attach_post(App $a)
-{
-	$isJson = (!empty($_GET['response']) && $_GET['response'] == 'json');
-
-	if (DI::args()->getArgc() > 1) {
-		$nick  = DI::args()->getArgv()[1];
-		$owner = User::getOwnerDataByNick($nick);
-		if (!DBA::isResult($owner)) {
-			Logger::warning('owner is not a valid record:', ['owner' => $owner, 'nick' => $nick]);
-			if ($isJson) {
-				System::jsonExit(['error' => DI::l10n()->t('Invalid request.')]);
-			}
-			return;
-		}
-	} else {
-		Logger::warning('Argument count is zero or one (invalid)');
-		if ($isJson) {
-			System::jsonExit(['error' => DI::l10n()->t('Invalid request.')]);
-		}
-
-		return;
-	}
-
-	$can_post = false;
-
-	$page_owner_uid = $owner['uid'];
-	$page_owner_cid = $owner['id'];
-	$community_page = $owner['page-flags'] == User::PAGE_FLAGS_COMMUNITY;
-
-	if (DI::userSession()->getLocalUserId() && (DI::userSession()->getLocalUserId() == $page_owner_uid)) {
-		$can_post = true;
-	} elseif ($community_page && !empty(DI::userSession()->getRemoteContactID($page_owner_uid))) {
-		$contact_id = DI::userSession()->getRemoteContactID($page_owner_uid);
-		$can_post   = DBA::exists('contact', ['blocked' => false, 'pending' => false, 'id' => $contact_id, 'uid' => $page_owner_uid]);
-	}
-
-	if (!$can_post) {
-		Logger::warning('User does not have required permissions', ['contact_id' => $contact_id, 'page_owner_uid' => $page_owner_uid]);
-		if ($isJson) {
-			System::jsonExit(['error' => DI::l10n()->t('Permission denied.')]);
-		}
-		DI::sysmsg()->addNotice(DI::l10n()->t('Permission denied.'));
-		System::exit();
-	}
-
-	if (empty($_FILES['userfile'])) {
-		Logger::warning('No file uploaded (empty userfile)');
-		if ($isJson) {
-			System::jsonExit(['error' => DI::l10n()->t('Invalid request.')]);
-		}
-		System::exit();
-	}
-
-	$tempFileName = $_FILES['userfile']['tmp_name'];
-	$fileName     = basename($_FILES['userfile']['name']);
-	$fileSize     = intval($_FILES['userfile']['size']);
-	$maxFileSize  = DI::config()->get('system', 'maxfilesize');
-
-	/*
-	 * Found html code written in text field of form, when trying to upload a
-	 * file with filesize greater than upload_max_filesize. Cause is unknown.
-	 * Then Filesize gets <= 0.
-	 */
-	if ($fileSize <= 0) {
-		$msg = DI::l10n()->t('Sorry, maybe your upload is bigger than the PHP configuration allows') . '<br />' . DI::l10n()->t('Or - did you try to upload an empty file?');
-		Logger::warning($msg, ['fileSize' => $fileSize]);
-		@unlink($tempFileName);
-		if ($isJson) {
-			System::jsonExit(['error' => $msg]);
-		} else {
-			DI::sysmsg()->addNotice($msg);
-		}
-		System::exit();
-	}
-
-	if ($maxFileSize && $fileSize > $maxFileSize) {
-		$msg = DI::l10n()->t('File exceeds size limit of %s', Strings::formatBytes($maxFileSize));
-		Logger::warning($msg, ['fileSize' => $fileSize]);
-		@unlink($tempFileName);
-		if ($isJson) {
-			System::jsonExit(['error' => $msg]);
-		} else {
-			echo $msg . '<br />';
-		}
-		System::exit();
-	}
-
-	$newid = Attach::storeFile($tempFileName, $page_owner_uid, $fileName, '<' . $page_owner_cid . '>');
-
-	@unlink($tempFileName);
-
-	if ($newid === false) {
-		$msg = DI::l10n()->t('File upload failed.');
-		Logger::warning($msg);
-		if ($isJson) {
-			System::jsonExit(['error' => $msg]);
-		} else {
-			echo $msg . '<br />';
-		}
-		System::exit();
-	}
-
-	if ($isJson) {
-		System::jsonExit(['ok' => true, 'id' => $newid]);
-	}
-
-	$lf = "\n";
-
-	echo  $lf . $lf . '[attachment]' . $newid . '[/attachment]' . $lf;
-	System::exit();
-	// NOTREACHED
-}