[flatpaks/flatpak-runtime] f45: Revert "container.yaml: Only build for x86_64"

[Kalev Lember <klember@redhat.com>]

            A new commit has been pushed.

            Repo   : flatpaks/flatpak-runtime
            Branch : f45
            Commit : ba92e53bc768ad08211221cae54ae5cd3fcc871a
            Author : Kalev Lember <klember@redhat.com>
            Date   : 2021-10-18T18:35:51+02:00
            Stats  : +0/-5 in 1 file(s)
            URL    : https://src.fedoraproject.org/flatpaks/flatpak-runtime/c/ba92e53bc768ad08211221cae54ae5cd3fcc871a?branch=f45

            Log:
            Revert "container.yaml: Only build for x86_64"

The previous commit should hopefully make it possible to build the
runtime flatpak for aarch64 as well.

This reverts commit 16388b214f37de89753887c20fcc5dd021d13bf9.

---
diff --git a/container.yaml b/container.yaml
index 7971be8..02dc3de 100644
--- a/container.yaml
+++ b/container.yaml
@@ -42,8 +42,3 @@ flatpak:
 
         touch -d @0 /usr/share/fonts /usr/share/fonts/*
         fc-cache -rs
-
-# We don't have a way to make the set of included RPMs specific to a particular
-# architecture, and some packages are missing on other platforms
-platforms:
-    only: x86_64