pgsql: Remove thread dumping constant that requires newer Platform SDK

Remove thread dumping constant that requires newer Platform SDK

Since we're not multithreaded it only provides marginally useful
information, and it does require a newer version of the Platform SDK
than we target. We may want to reconsider this in the future along
with a fix for MinGW.

Branch
------
master

Details
-------
http://git.postgresql.org/gitweb?p=postgresql.git;a=commitdiff;h=d382828f6ed1edc0f123934d53c52065ecc425c9

Modified Files
--------------
src/backend/port/win32/crashdump.c | 5 -----
1 files changed, 0 insertions(+), 5 deletions(-)