i.e. no way to get any useful information out of it, at least since

	commit 8b3fcb6a
    Date:   Fri Aug 11 10:01:25 2017 +0530
    Removing unused SfxItemPool serialisation from svx

Which means that SID_RANGE_VALUE is also useless.

Possibly the commit that added this had a bug, and it meant to use
SvxDoubleItem, which implements the necessary QueryValue/PutValue
methods to be able to interact with macro code.

Change-Id: I6ffb0c46f6f0864f202d71f0e157d7e1d0f54f51
Reviewed-on: https://gerrit.libreoffice.org/62232
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>