Revert "cid#706551 Uncaught exception"

This reverts commit ec651eaead5aaa2a74f4c87d3bf17f7feddb958e, now that
fced31697bcc2a2a4da34d804582002de0320302 "comphelper::SequenceAsHashMap: throw
IllegalArgumentException" made the underlying problem go away.

Conflicts:
	framework/source/inc/loadenv/loadenv.hxx
	framework/source/loadenv/loadenv.cxx

Change-Id: I473815256b95f6e20a2e1a4a5617f491636305ab