Remove unused expected-output file.

Robert Haas <rhaas@postgresql.org>

Commit: 8bd42fe5c715c478a4b3ceb77cb28ef9f18b5486
Author: Robert Haas <rhaas@postgresql.org>
Date: 2015-08-15T03:13:13Z
Releases: 9.6.0
Remove unused expected-output file.

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