pgsql: Remove remaining expected file for Python 2.2

Remove remaining expected file for Python 2.2

We don't have complete expected coverage for Python 2.2 anyway, so it
doesn't seem worth keeping this one around that no one appears to be
updating anyway.  Visual inspection of the differences ought to be
good enough for those few who care about this obsolete Python version.

Branch
------
master

Details
-------
http://git.postgresql.org/pg/commitdiff/438cdf6e4893311df4e94dc55b961a691908a530

Modified Files
--------------
src/pl/plpython/expected/README                 |   12 +++--
src/pl/plpython/expected/plpython_unicode_2.out |   52 -----------------------
2 files changed, 7 insertions(+), 57 deletions(-)