meta-fii: meta-mori: Fix graceful shutdown was force shutdown issue

The obmc-host-shutdown_0.target requires obmc-chassis-poweroff_0.target
cause the power_off function being called, and eventually do the force
off, so we remove the obmc-chassis-poweroff_0.target from 
obmc-host-shutdown_0.target's requires.

Change-Id: I28184aafb3aac9e0b10000fb15e8817e4976465b
Signed-off-by: Vincent Chou <vincent.chou@fii-na.com>
diff --git a/meta-fii/meta-mori/recipes-phosphor/state/phosphor-state-manager_%.bbappend b/meta-fii/meta-mori/recipes-phosphor/state/phosphor-state-manager_%.bbappend
index ce1fae3..c1e731f 100644
--- a/meta-fii/meta-mori/recipes-phosphor/state/phosphor-state-manager_%.bbappend
+++ b/meta-fii/meta-mori/recipes-phosphor/state/phosphor-state-manager_%.bbappend
@@ -17,6 +17,7 @@
 pkg_postinst:${PN}-obmc-targets:append:mori() {
     rm "$D$systemd_system_unitdir/obmc-host-reboot@0.target.requires/obmc-host-shutdown@0.target"
     rm "$D$systemd_system_unitdir/obmc-host-reboot@0.target.requires/phosphor-reboot-host@0.service"
+    rm "$D$systemd_system_unitdir/obmc-host-shutdown@0.target.requires/obmc-chassis-poweroff@0.target"
 }