pgsql: Remove individual user copyright because the code is contributed

Log Message:
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Remove individual user copyright because the code is contributed to
PGDG:

Yes. In fact the copyright belongs to credativ GmbH the company that
paid Carsten for his work. As you may or may not know I'm the CEO of
that company and can assure you that his work was contributed to the
PostgreSQL project.

Modified Files:
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pgsql/src/interfaces/ecpg/compatlib:
informix.c (r1.44 -> r1.45)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/compatlib/informix.c.diff?r1=1.44&r2=1.45)