remove spurious ifdef POSIX_SPAWN_CLOEXEC_DEFAULT

(due to automerge to sc-mainline-prod being turned off,
and tm-dev already having this #define'd)

Test: N/A, trivial, TreeHugger
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: Ibf18b2c414f4916301476aa715ef465c8a98ec99
1 file changed