Remove bogus '$this->resource' from SES error handling pathway

Summary: Ref T10728. This property does not exist and is never referenced. The `'resource'` key is also never referenced, so I believe this can be safely removed.

Test Plan: Will make @amckinley do my job for me.

Reviewers: chad

Reviewed By: chad

Subscribers: amckinley

Maniphest Tasks: T10728

Differential Revision: https://secure.phabricator.com/D15624

Author: epriestley

externals/amazon-ses/ses.php

@@ -530,7 +530,6 @@ public function getResponse() {
         'curl' => true,
         'code' => curl_errno($curl),
         'message' => curl_error($curl),
-        'resource' => $this->resource
       );
     }