sip: origin: Decouple TLS usage from target address

Since we cannot do encrypted media streams yet, we should hardcode whether or
not we want to use SRTP to FALSE, so that sips target URLs can be used in SIP
calls at all.

plugins/sip/calls-sip-origin.c

@@ -252,7 +252,7 @@ add_call (CallsSipOrigin *self,
 
     local_sdp = calls_sip_media_manager_static_capabilities (self->media_manager,
                                                              local_port,
-                                                             check_sips (address));
+                                                             FALSE);
 
     g_assert (local_sdp);