pgsql: PL/Python: Adjust the regression tests for Python 3.4

PL/Python: Adjust the regression tests for Python 3.4

Back-patch commit d0765d50f429472d00554701ac6531c84d324811 into 9.3
and 9.2, which is as far back as we previously bothered to adjust the
regression tests for Python 3.3.  Per gripe from Honza Horak.

Branch
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REL9_3_STABLE

Details
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http://git.postgresql.org/pg/commitdiff/c102c32e9ad3066eaa0e13492a5d03dc511811c8

Modified Files
--------------
src/pl/plpython/expected/plpython_do.out |    6 +++---
src/pl/plpython/sql/plpython_do.sql      |    2 +-
2 files changed, 4 insertions(+), 4 deletions(-)