diff --git a/resources/sql/autopatches/20150102.tasksubscriber.sql b/resources/sql/autopatches/20150102.tasksubscriber.sql
new file mode 100644
--- /dev/null
+++ b/resources/sql/autopatches/20150102.tasksubscriber.sql
@@ -0,0 +1 @@
+DROP TABLE `{$NAMESPACE}_maniphest`.`maniphest_tasksubscriber`;
diff --git a/src/__phutil_library_map__.php b/src/__phutil_library_map__.php
--- a/src/__phutil_library_map__.php
+++ b/src/__phutil_library_map__.php
@@ -1043,7 +1043,6 @@
     'ManiphestTaskStatus' => 'applications/maniphest/constants/ManiphestTaskStatus.php',
     'ManiphestTaskStatusDatasource' => 'applications/maniphest/typeahead/ManiphestTaskStatusDatasource.php',
     'ManiphestTaskStatusTestCase' => 'applications/maniphest/constants/__tests__/ManiphestTaskStatusTestCase.php',
-    'ManiphestTaskSubscriber' => 'applications/maniphest/storage/ManiphestTaskSubscriber.php',
     'ManiphestTransaction' => 'applications/maniphest/storage/ManiphestTransaction.php',
     'ManiphestTransactionComment' => 'applications/maniphest/storage/ManiphestTransactionComment.php',
     'ManiphestTransactionEditor' => 'applications/maniphest/editor/ManiphestTransactionEditor.php',
@@ -4186,7 +4185,6 @@
     'ManiphestTaskStatus' => 'ManiphestConstants',
     'ManiphestTaskStatusDatasource' => 'PhabricatorTypeaheadDatasource',
     'ManiphestTaskStatusTestCase' => 'PhabricatorTestCase',
-    'ManiphestTaskSubscriber' => 'ManiphestDAO',
     'ManiphestTransaction' => 'PhabricatorApplicationTransaction',
     'ManiphestTransactionComment' => 'PhabricatorApplicationTransactionComment',
     'ManiphestTransactionEditor' => 'PhabricatorApplicationTransactionEditor',
diff --git a/src/applications/maniphest/storage/ManiphestTaskSubscriber.php b/src/applications/maniphest/storage/ManiphestTaskSubscriber.php
deleted file mode 100644
--- a/src/applications/maniphest/storage/ManiphestTaskSubscriber.php
+++ /dev/null
@@ -1,62 +0,0 @@
-<?php
-
-/**
- * Deprecated; delete me.
- */
-final class ManiphestTaskSubscriber extends ManiphestDAO {
-
-  protected $taskPHID;
-  protected $subscriberPHID;
-
-  public function getConfiguration() {
-    return array(
-      self::CONFIG_IDS          => self::IDS_MANUAL,
-      self::CONFIG_TIMESTAMPS   => false,
-      self::CONFIG_COLUMN_SCHEMA => array(
-        'id' => null,
-      ),
-      self::CONFIG_KEY_SCHEMA => array(
-        'PRIMARY' => array(
-          'columns' => array('subscriberPHID', 'taskPHID'),
-          'unique' => true,
-        ),
-        'taskPHID' => array(
-          'columns' => array('taskPHID', 'subscriberPHID'),
-          'unique' => true,
-        ),
-      ),
-    );
-  }
-
-  public static function updateTaskSubscribers(ManiphestTask $task) {
-    $dao = new ManiphestTaskSubscriber();
-    $conn = $dao->establishConnection('w');
-
-    $sql = array();
-    $subscribers = $task->getCCPHIDs();
-    $subscribers[] = $task->getOwnerPHID();
-    $subscribers = array_unique($subscribers);
-
-    foreach ($subscribers as $subscriber_phid) {
-      $sql[] = qsprintf(
-        $conn,
-        '(%s, %s)',
-        $task->getPHID(),
-        $subscriber_phid);
-    }
-
-    queryfx(
-      $conn,
-      'DELETE FROM %T WHERE taskPHID = %s',
-      $dao->getTableName(),
-      $task->getPHID());
-    if ($sql) {
-      queryfx(
-        $conn,
-        'INSERT INTO %T (taskPHID, subscriberPHID) VALUES %Q',
-        $dao->getTableName(),
-        implode(', ', $sql));
-    }
-  }
-
-}