[sysadmin-bin] Drop the ostree post-receive hook, it has been decommissioned

[Andrea Veri <averi src gnome org>]

commit a3daf59c07b3f9a8a254a386dc27b86a55310184
Author: Andrea Veri <averi redhat com>
Date:   Mon Nov 11 12:03:55 2019 +0100

    Drop the ostree post-receive hook, it has been decommissioned

 git/gnome-post-receive | 1 -
 1 file changed, 1 deletion(-)
---
diff --git a/git/gnome-post-receive b/git/gnome-post-receive
index 90a867f..8d30c78 100755
--- a/git/gnome-post-receive
+++ b/git/gnome-post-receive
@@ -30,7 +30,6 @@ tee >($BINDIR/log-push 1>&2) \
     >($BINDIR/post-receive-update-description 1>&2) \
     >($BINDIR/post-receive-notify-updates 1>&2) \
     >($BINDIR/post-receive-notify-l10n 1>&2) \
-    >($BINDIR/post-receive-notify-ostree 1>&2) \
     >($BINDIR/post-receive-notify-kgb 1>&2) \
     >($BINDIR/post-receive-github 1>&2) \
     | $BINDIR/gnome-post-receive-email 1>&2