diff --git a/resources/sql/autopatches/20161005.conpherence.image.2.php b/resources/sql/autopatches/20161005.conpherence.image.2.php
--- a/resources/sql/autopatches/20161005.conpherence.image.2.php
+++ b/resources/sql/autopatches/20161005.conpherence.image.2.php
@@ -1,34 +1,4 @@
 <?php
 
-// Rebuild all Conpherence Room images to profile standards
-//
-$table = new ConpherenceThread();
-$conn = $table->establishConnection('w');
-$table_name = 'conpherence_thread';
-
-foreach (new LiskRawMigrationIterator($conn, $table_name) as $row) {
-
-  $images = phutil_json_decode($row['imagePHIDs']);
-  if (!$images) {
-    continue;
-  }
-
-  $file_phid = idx($images, 'original');
-
-  $file = id(new PhabricatorFileQuery())
-    ->setViewer(PhabricatorUser::getOmnipotentUser())
-    ->withPHIDs(array($file_phid))
-    ->executeOne();
-
-  $xform = PhabricatorFileTransform::getTransformByKey(
-    PhabricatorFileThumbnailTransform::TRANSFORM_PROFILE);
-  $xformed = $xform->executeTransform($file);
-  $new_phid = $xformed->getPHID();
-
-  queryfx(
-    $conn,
-    'UPDATE %T SET profileImagePHID = %s WHERE id = %d',
-    $table->getTableName(),
-    $new_phid,
-    $row['id']);
-}
+// This migration once resized room images for Conpherence, but the File table
+// later changed significantly. See T12628.