[smuxi: 150/179] Engine-XMPP: remove obsolete Facebook protocol manager

[Mirco M. M. Bauer <mmmbauer src gnome org>]

commit aada6238b4655a31773dfe649ca020f83f3e8ca7
Author: Mirco Bauer <meebey meebey net>
Date:   Mon May 29 20:44:39 2017 +0800

    Engine-XMPP: remove obsolete Facebook protocol manager
    
    Facebook has killed their XMPP gateway [0] since April 30th, 2015. Since then
    it is no longer possible to connect to Facebook using XMPP and this confuses
    sometimes Smuxi users as Facebook is still shown as a protocol option.
    
    If Facebook ever changes their mind on this, this code can be easily brought
    back if needed.
    
     [0]: https://developers.facebook.com/docs/chat

 src/Engine-XMPP/Engine-XMPP.csproj                 |    3 -
 src/Engine-XMPP/Makefile.am                        |    3 +-
 .../Protocols/Xmpp/FacebookProtocolManager.cs      |   47 --------------------
 .../Protocols/Xmpp/XmppProtocolManager.cs          |    8 ---
 4 files changed, 1 insertions(+), 60 deletions(-)
---
diff --git a/src/Engine-XMPP/Engine-XMPP.csproj b/src/Engine-XMPP/Engine-XMPP.csproj
index ace11c6..0e81210 100644
--- a/src/Engine-XMPP/Engine-XMPP.csproj
+++ b/src/Engine-XMPP/Engine-XMPP.csproj
@@ -47,9 +47,6 @@
     <Compile Include="Config\XmppPersonModel.cs" />
   </ItemGroup>
   <ItemGroup>
-    <Compile Include="Protocols\Xmpp\FacebookProtocolManager.cs" />
-  </ItemGroup>
-  <ItemGroup>
     <ProjectReference Include="..\Common\Common.csproj">
       <Project>{73DEF91D-03FF-41E3-B2E1-3259AF247CA7}</Project>
       <Name>Common</Name>
diff --git a/src/Engine-XMPP/Makefile.am b/src/Engine-XMPP/Makefile.am
index c8b02db..f66ee97 100644
--- a/src/Engine-XMPP/Makefile.am
+++ b/src/Engine-XMPP/Makefile.am
@@ -9,8 +9,7 @@ SOURCES = \
        Config/XmppServerModel.cs \
        Protocols/Xmpp/XmppGroupChatModel.cs \
        Protocols/Xmpp/XmppProtocolManager.cs \
-       Config/XmppPersonModel.cs \
-       Protocols/Xmpp/FacebookProtocolManager.cs
+       Config/XmppPersonModel.cs
 
 REFERENCES = \
        System \
diff --git a/src/Engine-XMPP/Protocols/Xmpp/XmppProtocolManager.cs 
b/src/Engine-XMPP/Protocols/Xmpp/XmppProtocolManager.cs
index fb703cb..b0c772c 100644
--- a/src/Engine-XMPP/Protocols/Xmpp/XmppProtocolManager.cs
+++ b/src/Engine-XMPP/Protocols/Xmpp/XmppProtocolManager.cs
@@ -253,14 +253,6 @@ namespace Smuxi.Engine
                 NetworkID, String.Format("{0} {1}", Protocol, Host), this
             );
             Session.AddChat(NetworkChat);
-            if (Host.EndsWith("facebook.com") && !(this is FacebookProtocolManager)) {
-                var builder = CreateMessageBuilder();
-                builder.AppendEventPrefix();
-                builder.AppendMessage(_("This engine has native Facebook support, you should be using it 
instead of connecting to Facebook with XMPP"));
-                // cannot use AddMessageToFrontend because NetworkChat is not yet synced, causing 
AddMessageToFrontend to drop it.
-                // cannot sync NetworkChat before this, because then the sync would swallow the message
-                Session.AddMessageToChat(NetworkChat, builder.ToMessage());
-            }
             Session.SyncChat(NetworkChat);
 
             Connect();