Delete dead "chat" simulation command, "chat" GUIInterface notification type, "aichat" NetClient message and useless "debug-print" simulation command.

The "chat" simulation command and according GUIInterface notification
became unused which translated simulation chat messages ("aichat") in
7afe0afbca.
That commit also introduced the "aichat" network message parsing code
that is never triggered since the NetClient never creates messages of
that type.
The "debug-print" command introduced by 1c0536bf08 sends a GUI value to
the simulation and prints it to the log, which is already covered by the
JS console since e4fe4ed602.

Differential Revision: https://code.wildfiregames.com/D2407
This was SVN commit r23137.

binaries/data/mods/public/gui/session/messages.js

@@ -80,14 +80,6 @@ var g_NetMessageTypes = {
 			"text": msg.text
 		});
 	},
-	"aichat": msg => {
-		addChatMessage({
-			"type": "message",
-			"guid": msg.guid,
-			"text": msg.text,
-			"translate": true
-		});
-	},
 	"gamesetup": msg => {}, // Needed for autostart
 	"start": msg => {}
 };
@@ -104,18 +96,6 @@ var g_PlayerStateMessages = {
  */
 var g_NotificationsTypes =
 {
-	"chat": function(notification, player)
-	{
-		let message = {
-			"type": "message",
-			"guid": findGuidForPlayerID(player) || -1,
-			"text": notification.message
-		};
-		if (message.guid == -1)
-			message.player = player;
-
-		addChatMessage(message);
-	},
 	"aichat": function(notification, player)
 	{
 		let message = {

binaries/data/mods/public/simulation/helpers/Commands.js

@@ -51,16 +51,6 @@ function ProcessCommand(player, cmd)
 }
 
 var g_Commands = {
-	"debug-print": function(player, cmd, data)
-	{
-		print(cmd.message);
-	},
-
-	"chat": function(player, cmd, data)
-	{
-		var cmpGuiInterface = Engine.QueryInterface(SYSTEM_ENTITY, IID_GuiInterface);
-		cmpGuiInterface.PushNotification({ "type": cmd.type, "players": [player], "message": cmd.message });
-	},
 
 	"aichat": function(player, cmd, data)
 	{