[gtk] Belarusian translation: Remove broken translation string

[Andre Klapper <aklapper src gnome org>]

commit 90c429a91c881644e21e2e9c53602fcae8a57d88
Author: Andre Klapper <a9016009 gmx de>
Date:   Sat Aug 7 19:09:15 2021 +0200

    Belarusian translation: Remove broken translation string

 po/be.po | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/po/be.po b/po/be.po
index ab13ca5ee4..c2c3480432 100644
--- a/po/be.po
+++ b/po/be.po
@@ -1010,7 +1010,7 @@ msgstr "Тэкст можа не паказвацца ўнутры <%s>"
 #.
 #: gtk/gtkcalendar.c:766
 msgid "calendar:MY"
-msgstr "каляндар:MY"
+msgstr ""
 
 #. Translate to calendar:week_start:0 if you want Sunday to be the
 #. * first day of the week to calendar:week_start:1 if you want Monday