[gbrainy/difficulty] Remove difficulty page

[Jordi Mas <jmas src gnome org>]

commit 7221568005451ef878f1bfcacfc237663470bc9a
Author: Jordi Mas <jmas softcatala org>
Date:   Sat Sep 3 20:01:06 2022 +0200

    Remove difficulty page

 help/Makefile.am | 1 -
 1 file changed, 1 deletion(-)
---
diff --git a/help/Makefile.am b/help/Makefile.am
index 298d7451..39754026 100644
--- a/help/Makefile.am
+++ b/help/Makefile.am
@@ -17,7 +17,6 @@ HELP_FILES = \
        license.page    \
        pause.page      \
        tips.page       \
-       difficulty.page \
        history.page    \
        multiplayer.page \
        score.page      \