[gnome-runtime-images] Revert "gnome-3-34: use flathub-beta for now till the official release"

[Jordan Petridis <jpetridis src gnome org>]

commit e8437e65b4d9d5c5e8f27ba5a2de5c7b88496065
Author: Jordan Petridis <jpetridis gnome org>
Date:   Wed Sep 11 18:57:55 2019 +0300

    Revert "gnome-3-34: use flathub-beta for now till the official release"
    
    This reverts commit 35ba9e1ffd3bdb7cc8854a1df9217f5aeec46c02.

 gnome-3-34/Dockerfile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gnome-3-34/Dockerfile b/gnome-3-34/Dockerfile
index 35567b4..793e0cc 100644
--- a/gnome-3-34/Dockerfile
+++ b/gnome-3-34/Dockerfile
@@ -1,3 +1,3 @@
 FROM registry.gitlab.gnome.org/gnome/gnome-runtime-images/base
 
-RUN flatpak install -y flathub-beta org.gnome.Sdk//3.34 org.gnome.Platform//3.34
+RUN flatpak install -y flathub org.gnome.Sdk//3.34 org.gnome.Platform//3.34