This was added in commit 36ad473e (Build
fixes for VC++ 10, 2010-10-20) where it was only safe to conditionally
add support for Visual Studio 2010.

Change-Id: I62c4aefd39a5943259a5a1e462f4762c1aac5e1e
Reviewed-on: https://gerrit.libreoffice.org/38768Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>