Revert "toolbox release v20210825"

This reverts commit 27084fcc1b7009a6bced667b19d8c39028e1b0f5.

Reason for revert: typographic error in release_tags

Change-Id: I4a63a97c4bc1279880ae1124f4e731a915a19639
Reviewed-on: https://cos-review.googlesource.com/c/cos/tools/+/21873
Reviewed-by: Robert Kolchmeyer <rkolchmeyer@google.com>
Tested-by: Arnav Kansal <rnv@google.com>
Cloud-Build: Arnav Kansal <rnv@google.com>
diff --git a/release/release-versions.yaml b/release/release-versions.yaml
index 5b41612..169109b 100644
--- a/release/release-versions.yaml
+++ b/release/release-versions.yaml
@@ -3,8 +3,3 @@
   release_tags:
     - "latest"
     - "v20210823"
-- container_name: "toolbox"
-  build_commit: "bd43467bf5d41b6f2fef4bba393605b5491717cf"
-  release_tage:
-    - "latest"
-    - "v20210825"