pgsql: Remove just-added tests for to_timestamp(float8) with out-of-ran

Remove just-added tests for to_timestamp(float8) with out-of-range inputs.

Reporting the specific out-of-range input value produces platform-dependent
results. We could skip reporting the value, but that's contrary to our
message style guidelines and unhelpful to users. Or we could add a
separate expected-output file for Windows, but that would be a substantial
maintenance burden, and these test cases seem unlikely to be worth it.

Per buildfarm.

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/c53ab8a3af46029b72634ec0643e78661b252f62

Modified Files
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src/test/regress/expected/timestamptz.out | 8 +-------
src/test/regress/sql/timestamptz.sql | 5 +----
2 files changed, 2 insertions(+), 11 deletions(-)