Remove various old things in scripts/

Summary: These have all been obsolete for a reasonable amount of time, or are no longer relevant.

Test Plan: shrug~

Reviewers: btrahan

Reviewed By: btrahan

Subscribers: epriestley

Differential Revision: https://secure.phabricator.com/D8941

scripts/search/reindex_maniphest.php

@@ -1,15 +0,0 @@
-#!/usr/bin/env php
-<?php
-
-$root = dirname(dirname(dirname(__FILE__)));
-require_once $root.'/scripts/__init_script__.php';
-
-ini_set('memory_limit', -1);
-$tasks = id(new ManiphestTask())->loadAll();
-echo "Updating relationships for ".count($tasks)." tasks";
-foreach ($tasks as $task) {
-  ManiphestTaskProject::updateTaskProjects($task);
-  ManiphestTaskSubscriber::updateTaskSubscribers($task);
-  echo '.';
-}
-echo "\nDone.\n";