Remove standalone SMS support in favor of a "Mail, SMS, and other media are mostly the same thing" approach

Summary:
Ref T920. Over time, mail has become much more complex and I think considering "mail", "sms", "postcards", "whatsapp", etc., to be mostly-the-same is now a more promising avenue than building separate stacks for each one.

Throw away all the standalone SMS code, including the Twilio config options. I have a separate diff that adds Twilio as a mail adapter and functions correctly, but it needs some more work to bring upstream.

This permanently destroys the `sms` table, which no real reachable code ever wrote to. I'll call this out in the changelog.

Test Plan:
  - Grepped for `SMS` and `Twilio`.
  - Ran storage upgrade.

Reviewers: amckinley

Reviewed By: amckinley

Subscribers: PHID-OPKG-gm6ozazyms6q6i22gyam

Maniphest Tasks: T920

Differential Revision: https://secure.phabricator.com/D19939

Author: epriestley

resources/sql/autopatches/20190101.sms.01.drop.sql

@@ -0,0 +1 @@
+DROP TABLE {$NAMESPACE}_metamta.sms;

scripts/sms/manage_sms.php

@@ -4239,19 +4239,6 @@
     'PhabricatorResourceSite' => 'aphront/site/PhabricatorResourceSite.php',
     'PhabricatorRobotsController' => 'applications/system/controller/PhabricatorRobotsController.php',
     'PhabricatorS3FileStorageEngine' => 'applications/files/engine/PhabricatorS3FileStorageEngine.php',
-    'PhabricatorSMS' => 'infrastructure/sms/storage/PhabricatorSMS.php',
-    'PhabricatorSMSConfigOptions' => 'applications/config/option/PhabricatorSMSConfigOptions.php',
-    'PhabricatorSMSDAO' => 'infrastructure/sms/storage/PhabricatorSMSDAO.php',
-    'PhabricatorSMSDemultiplexWorker' => 'infrastructure/sms/worker/PhabricatorSMSDemultiplexWorker.php',
-    'PhabricatorSMSImplementationAdapter' => 'infrastructure/sms/adapter/PhabricatorSMSImplementationAdapter.php',
-    'PhabricatorSMSImplementationTestBlackholeAdapter' => 'infrastructure/sms/adapter/PhabricatorSMSImplementationTestBlackholeAdapter.php',
-    'PhabricatorSMSImplementationTwilioAdapter' => 'infrastructure/sms/adapter/PhabricatorSMSImplementationTwilioAdapter.php',
-    'PhabricatorSMSManagementListOutboundWorkflow' => 'infrastructure/sms/management/PhabricatorSMSManagementListOutboundWorkflow.php',
-    'PhabricatorSMSManagementSendTestWorkflow' => 'infrastructure/sms/management/PhabricatorSMSManagementSendTestWorkflow.php',
-    'PhabricatorSMSManagementShowOutboundWorkflow' => 'infrastructure/sms/management/PhabricatorSMSManagementShowOutboundWorkflow.php',
-    'PhabricatorSMSManagementWorkflow' => 'infrastructure/sms/management/PhabricatorSMSManagementWorkflow.php',
-    'PhabricatorSMSSendWorker' => 'infrastructure/sms/worker/PhabricatorSMSSendWorker.php',
-    'PhabricatorSMSWorker' => 'infrastructure/sms/worker/PhabricatorSMSWorker.php',
     'PhabricatorSQLPatchList' => 'infrastructure/storage/patch/PhabricatorSQLPatchList.php',
     'PhabricatorSSHKeyGenerator' => 'infrastructure/util/PhabricatorSSHKeyGenerator.php',
     'PhabricatorSSHKeysSettingsPanel' => 'applications/settings/panel/PhabricatorSSHKeysSettingsPanel.php',
@@ -10269,19 +10256,6 @@
     'PhabricatorResourceSite' => 'PhabricatorSite',
     'PhabricatorRobotsController' => 'PhabricatorController',
     'PhabricatorS3FileStorageEngine' => 'PhabricatorFileStorageEngine',
-    'PhabricatorSMS' => 'PhabricatorSMSDAO',
-    'PhabricatorSMSConfigOptions' => 'PhabricatorApplicationConfigOptions',
-    'PhabricatorSMSDAO' => 'PhabricatorLiskDAO',
-    'PhabricatorSMSDemultiplexWorker' => 'PhabricatorSMSWorker',
-    'PhabricatorSMSImplementationAdapter' => 'Phobject',
-    'PhabricatorSMSImplementationTestBlackholeAdapter' => 'PhabricatorSMSImplementationAdapter',
-    'PhabricatorSMSImplementationTwilioAdapter' => 'PhabricatorSMSImplementationAdapter',
-    'PhabricatorSMSManagementListOutboundWorkflow' => 'PhabricatorSMSManagementWorkflow',
-    'PhabricatorSMSManagementSendTestWorkflow' => 'PhabricatorSMSManagementWorkflow',
-    'PhabricatorSMSManagementShowOutboundWorkflow' => 'PhabricatorSMSManagementWorkflow',
-    'PhabricatorSMSManagementWorkflow' => 'PhabricatorManagementWorkflow',
-    'PhabricatorSMSSendWorker' => 'PhabricatorSMSWorker',
-    'PhabricatorSMSWorker' => 'PhabricatorWorker',
     'PhabricatorSQLPatchList' => 'Phobject',
     'PhabricatorSSHKeyGenerator' => 'Phobject',
     'PhabricatorSSHKeysSettingsPanel' => 'PhabricatorSettingsPanel',