tizen: Remove things-manager installation

tizen: Remove things-manager installation

Change-Id: I6b8c4ef6322072b9340ab9dc637e6d4751846b90
Signed-off-by: Philippe Coval <philippe.coval@osg.samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/14613
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Ziran Sun <ziran.sun@samsung.com>
Reviewed-by: Habib Virji <habib.virji@samsung.com>
(cherry picked from commit 44f330b2077b6dde540182480876d0349ad3e0db)
Reviewed-on: https://gerrit.iotivity.org/gerrit/14801
Reviewed-by: Uze Choi <uzchoi@samsung.com>