packagegroups: Remove obmc-mgr-system

The system manager (obmc-mgr-system) which provided GPIO
functionality is being deprecated and it's not in use anymore:
* GPIOs have moved out of D-Bus (see openbmc/openbmc#3332).
* Tools depending on its GPIO functions have been updated to
call local functions instead.
* The systemd service files have been updated to not depend
on system manager.

Change-Id: Ide5492192d4cb5bb373e75831c0f8eafa283f8e2
Signed-off-by: Adriana Kobylak <anoo@us.ibm.com>
diff --git a/meta-gsj/conf/machine/gsj.conf b/meta-gsj/conf/machine/gsj.conf
index 08e9078..96db990 100644
--- a/meta-gsj/conf/machine/gsj.conf
+++ b/meta-gsj/conf/machine/gsj.conf
@@ -23,4 +23,3 @@
 PREFERRED_PROVIDER_virtual/obmc-chassis-mgmt = "packagegroup-gsj-apps"
 PREFERRED_PROVIDER_virtual/obmc-fan-mgmt = "packagegroup-gsj-apps"
 PREFERRED_PROVIDER_virtual/obmc-flash-mgmt = "packagegroup-gsj-apps"
-PREFERRED_PROVIDER_virtual/obmc-system-mgmt = "packagegroup-gsj-apps"
diff --git a/meta-gsj/recipes-gsj/packagegroups/packagegroup-gsj-apps.bb b/meta-gsj/recipes-gsj/packagegroups/packagegroup-gsj-apps.bb
index cca6639..322ba35 100644
--- a/meta-gsj/recipes-gsj/packagegroups/packagegroup-gsj-apps.bb
+++ b/meta-gsj/recipes-gsj/packagegroups/packagegroup-gsj-apps.bb
@@ -8,18 +8,15 @@
         ${PN}-chassis \
         ${PN}-fans \
         ${PN}-flash \
-        ${PN}-system \
         "
 
 PROVIDES += "virtual/obmc-chassis-mgmt"
 PROVIDES += "virtual/obmc-fan-mgmt"
 PROVIDES += "virtual/obmc-flash-mgmt"
-PROVIDES += "virtual/obmc-system-mgmt"
 
 RPROVIDES_${PN}-chassis += "virtual-obmc-chassis-mgmt"
 RPROVIDES_${PN}-fans += "virtual-obmc-fan-mgmt"
 RPROVIDES_${PN}-flash += "virtual-obmc-flash-mgmt"
-RPROVIDES_${PN}-system += "virtual-obmc-system-mgmt"
 
 SUMMARY_${PN}-chassis = "GSJ Chassis"
 RDEPENDS_${PN}-chassis = " \
@@ -37,8 +34,3 @@
         obmc-mgr-download \
         obmc-control-bmc \
         "
-
-SUMMARY_${PN}-system = "GSJ System"
-RDEPENDS_${PN}-system = " \
-        obmc-mgr-system \
-        "