pkg/kamailio/deb: [systemd] remove lintian warning

https://lintian.debian.org/tags/systemd-service-file-refers-to-obsolete-target.html

pkg/kamailio/deb/debian/kamailio.service

@@ -1,6 +1,6 @@
 [Unit]
 Description=Kamailio (OpenSER) - the Open Source SIP Server
-After=syslog.target network.target
+After=network.target
 
 [Service]
 Type=forking