[polari] chatView: Remove excess parameter

[Florian Müllner <fmuellner src gnome org>]

commit 643b6f85e149c69f1dd45b8ef73d69bfb36b1bc1
Author: Florian Müllner <fmuellner gnome org>
Date:   Mon Apr 10 00:04:31 2017 +0200

    chatView: Remove excess parameter
    
    Since 6f044e0614c changed the function, the parameter is wrong ...

 src/chatView.js |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/chatView.js b/src/chatView.js
index f3f3c3b..ad0093a 100644
--- a/src/chatView.js
+++ b/src/chatView.js
@@ -1078,7 +1078,7 @@ const ChatView = new Lang.Class({
 
             let start = buffer.get_iter_at_mark(headerMark);
             let end = start.copy();
-            end.forward_to_line_end(headerTag);
+            end.forward_to_line_end();
             buffer.delete(start, end);
         }