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/libosmo-sccp/libosmo-sccp.inc b/recipes-osmocom/libosmo-sccp/libosmo-sccp.inc
index 0f1f28d..34454b1 100644
--- a/recipes-osmocom/libosmo-sccp/libosmo-sccp.inc
+++ b/recipes-osmocom/libosmo-sccp/libosmo-sccp.inc
@@ -3,7 +3,7 @@
 HOMEPAGE = "https://osmocom.org/projects/libosmo-sccp"
 LICENSE = "AGPLv3"
 
-INC_PR="r2.${META_TELEPHONY_OSMO_INC}"
+INC_PR="r3.${META_TELEPHONY_OSMO_INC}"
 
 LIC_FILES_CHKSUM = "file://COPYING;md5=751419260aa954499f7abaabaa882bbe"
 
@@ -18,10 +18,14 @@
 # access symbols not starting with osmo_*
 EXTRA_OECONF_remove = "--disable-static"
 
-# 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}/osmo-stp.service"
 	sed -i '/^WorkingDirectory=/d' "${D}${systemd_system_unitdir}/osmo-stp.service"
+
+	# Run as root (OS#5684):
+	sed -i '/^User=/d' "${D}${systemd_system_unitdir}/osmo-stp.service"
+	sed -i '/^Group=/d' "${D}${systemd_system_unitdir}/osmo-stp.service"
 }
 
 PACKAGES =+ "osmo-stp"