meta-tizen: alarm-manager: remove failing vconftool command

meta-tizen: alarm-manager: remove failing vconftool command

In the postinst script, one of the vconftool command fails to execute
which prevents the image to be built. As a TEMPORARY WORKAROUND the
failing command is removed. This patch will need to be reverted as soon
as this issue has been properly corrected.

Bug-Tizen: BTY-24
Change-Id: I6d469c9fd8ae878890c98bc274b5e2a0df6712df
(From meta-tizen rev: 44f843bcf5aaa6fe396ad0bca0f8a69dc677a7ea)

Signed-off-by: Kévin THIERRY <kevin.thierry@open.eurogiciel.org>
Signed-off-by: Patrick Ohly <patrick.ohly@intel.com>