friendschat: remove Tab Chat option

this is now included in the vanilla client

runelite-client/src/main/java/net/runelite/client/plugins/friendschat/FriendsChatConfig.java

@@ -139,17 +139,6 @@ public interface FriendsChatConfig extends Config
 		return false;
 	}
 
-	@ConfigItem(
-		keyName = "clanTabChat",
-		name = "Tab Chat",
-		description = "Message friends chat without appending '/' when the friends chat tab is selected.",
-		position = 9
-	)
-	default boolean friendsChatTabChat()
-	{
-		return false;
-	}
-
 	@ConfigItem(
 		keyName = "confirmKicks",
 		name = "Confirm Kicks",

runelite-client/src/main/java/net/runelite/client/plugins/friendschat/FriendsChatPlugin.java

@@ -542,15 +542,6 @@ public class FriendsChatPlugin extends Plugin
 	{
 		switch (scriptCallbackEvent.getEventName())
 		{
-			case "friendsChatInput":
-			{
-				final int[] intStack = client.getIntStack();
-				final int size = client.getIntStackSize();
-				// If the user accidentally adds a / when the config and the friends chat chat tab is active, handle it like a normal message
-				boolean alterDispatch = config.friendsChatTabChat() && !client.getVar(VarClientStr.CHATBOX_TYPED_TEXT).startsWith("/");
-				intStack[size - 1] = alterDispatch ? 1 : 0;
-				break;
-			}
 			case "confirmFriendsChatKick":
 			{
 				if (!config.confirmKicks() || kickConfirmed)