[evolution-rss] Remove entirely empty Australian English translation file

[Andre Klapper <aklapper src gnome org>]

commit 960b44bce779b0ec3214c115ac193892b3c7f85e
Author: Andre Klapper <a9016009 gmx de>
Date:   Wed Jun 23 15:35:05 2021 +0200

    Remove entirely empty Australian English translation file

 po/LINGUAS  |   1 -
 po/en_AU.po | 702 ------------------------------------------------------------
 2 files changed, 703 deletions(-)
---
diff --git a/po/LINGUAS b/po/LINGUAS
index e46d835..6ac0df9 100644
--- a/po/LINGUAS
+++ b/po/LINGUAS
@@ -9,7 +9,6 @@ cs
 da
 de
 el
-en_AU
 en_GB
 es
 eu