Don't see how it could be used again, it appears to be leaked
and causes the assertion in PyThreadState_Swap to fire.

Change-Id: Id6bbb4363928e4fdd8bda1905f6e1f9931dba74c
Reviewed-on: https://gerrit.libreoffice.org/3452Reviewed-by: David Ostrovsky <David.Ostrovsky@gmx.de>
Tested-by: David Ostrovsky <David.Ostrovsky@gmx.de>