Remove the signaling URI settings

it now can be determined automatically

conf/settings.ini.dist

@@ -4,10 +4,6 @@
 ;user = 'vroom'
 ;password = 'password'
 
-[signaling]
-; URI sent to clients where they can find the signaling server
-;uri = 'https://vroom.exmple.com'
-
 [turn]
 ; The stun server sent to client. You can set it to your own stun server. Takes a comma separated list of full 
 ; stun uri as defined by rfc7064

templates/default/documentation.html.ep

@@ -280,19 +280,6 @@ cp /opt/vroom/conf/settings.ini.dist /opt/vroom/conf/settings.ini</pre>
         </ul>
       </p>
 
-      <h3 id="settings_signaling">
-       signaling
-      </h3>
-      <p>
-        This section is where you define your signaling server settings.
-        This is because VROOM was using a modified <a href="https://github.com/andyet/signalmaster">SignalMaster</a>
-        as signaling server, which could run on a separate server. Now, the signaling server is directly included in VROOM daemon
-        so this section might be removed in the future
-        <ul>
-          <li><strong>uri</strong>: The uri to reach VROOM (/socket.io will be added to reach the SocketIO server)</li>
-        </ul>
-      </p>
-
       <h3 id="settings_turn">
        turn
       </h3>

vroom.pl

@@ -1743,7 +1743,7 @@ any '/api' => sub {
   # Return configuration for SimpleWebRTC
   elsif ($req->{action} eq 'get_rtc_conf'){
     my $resp = {
-      url => $config->{'signaling.uri'},
+      url => Mojo::URL->new($self->url_for('/')->to_abs)->scheme('https'),
       peerConnectionConfig => {
         iceServers => []
       },