Remove unnecessary ajax file from files_sharing

apps/files_sharing/ajax/togglesharewitheveryone.php

-<?php
-
-OCP\JSON::callCheck();
-
-OCP\JSON::checkAppEnabled('files_sharing');
-OCP\JSON::checkAdminUser();
-if ($_POST['allowSharingWithEveryone'] == true) {
-	OCP\Config::setAppValue('files_sharing', 'allowSharingWithEveryone', 'yes');
-} else {
-	OCP\Config::setAppValue('files_sharing', 'allowSharingWithEveryone', 'no');
-}
\ No newline at end of file