Remove User= and Group= from systemd service files

Service files of Osmocom programs will have User= and Group= in the
future, so these don't run as root. It was decided that for OE-based
systems, we will still run them as root for now.

Related: OS#5684, OS#4107
Change-Id: I68a8fba034aeb0e2923b2958b8d6842410d8b23c
diff --git a/recipes-osmocom/osmo-msc/osmo-msc.inc b/recipes-osmocom/osmo-msc/osmo-msc.inc
index c60fd07..23a762a 100644
--- a/recipes-osmocom/osmo-msc/osmo-msc.inc
+++ b/recipes-osmocom/osmo-msc/osmo-msc.inc
@@ -5,7 +5,7 @@
 
 DEPENDS = "libdbi libosmocore libosmo-abis libosmo-sccp libosmo-netif osmo-mgw osmo-hlr"
 
-INC_PR="r3.${META_TELEPHONY_OSMO_INC}"
+INC_PR="r4.${META_TELEPHONY_OSMO_INC}"
 
 inherit autotools pkgconfig systemd
 
@@ -18,10 +18,14 @@
 PACKAGECONFIG[iu] = "--enable-iu,--disable-iu,libasn1c osmo-iuh,"
 PACKAGECONFIG[smpp] = "--enable-smpp,--disable-smpp,libsmpp34,"
 
-# StateDirectory requires systemd >= v235, but poky pyro ships with v232 (SYS#6340):
 do_install_append() {
+	# StateDirectory requires systemd >= v235, but poky pyro ships with v232 (SYS#6340):
 	sed -i '/^StateDirectory=/d' "${D}${systemd_system_unitdir}/${PN}.service"
 	sed -i '/^WorkingDirectory=/d' "${D}${systemd_system_unitdir}/${PN}.service"
+
+	# Run as root (OS#5684):
+	sed -i '/^User=/d' "${D}${systemd_system_unitdir}/${PN}.service"
+	sed -i '/^Group=/d' "${D}${systemd_system_unitdir}/${PN}.service"
 }
 
 RDEPENDS_${PN} = "libdbd-sqlite3"