Drop the `metamta_mailinglist` table

Summary: We haven't seen any issues here, remove the table and schema spec.

Test Plan: Not yet tested.

Reviewers: epriestley, #blessed_reviewers

Reviewed By: epriestley, #blessed_reviewers

Subscribers: Korvin

Differential Revision: https://secure.phabricator.com/D14067

resources/sql/autopatches/20150906.mailinglist.sql

···
+DROP TABLE {$NAMESPACE}_metamta.metamta_mailinglist;

src/applications/mailinglists/storage/PhabricatorMetaMTAMailingList.php

···
-<?php
-
-/**
- * TODO: This class is just here to keep `storage adjust` happy until we
- * destroy the table.
- */
-final class PhabricatorMetaMTAMailingList extends PhabricatorMetaMTADAO {
-
-  protected $name;
-  protected $email;
-  protected $uri;
-
-
-  protected function getConfiguration() {
-    return array(
-      self::CONFIG_AUX_PHID => true,
-      self::CONFIG_COLUMN_SCHEMA => array(
-        'name' => 'text128',
-        'email' => 'text128',
-        'uri' => 'text255?',
-      ),
-      self::CONFIG_KEY_SCHEMA => array(
-        'key_phid' => null,
-        'phid' => array(
-          'columns' => array('phid'),
-          'unique' => true,
-        ),
-        'email' => array(
-          'columns' => array('email'),
-          'unique' => true,
-        ),
-        'name' => array(
-          'columns' => array('name'),
-          'unique' => true,
-        ),
-      ),
-    ) + parent::getConfiguration();
-  }
-
-}