TT#175000 Remove rtcengine and janus support

Starting with mr10.5 the rtcengine and janus support is obsolete and no
longer available. NGCP already has WebRTC support for video calls on CSC.

Change-Id: I974147560d03f1652cbec9936c4f458b89f0db60

debian/control

@@ -303,7 +303,6 @@ Depends:
  haproxy,
  haveged,
  iptables-persistent,
- janus,
  kannel,
  keydb-server,
  ldap-utils,
@@ -358,7 +357,6 @@ Depends:
  ngcp-rate-o-mat,
  ngcp-reminder,
  ngcp-rest-api,
- ngcp-rtcengine-pro,
  ngcp-rtpengine,
  ngcp-snmp-agent,
  ngcp-status,