[lworld] Integrated: Remove 32-bit builds from GH actions

[Aleksey Shipilev]

On Wed, 28 Oct 2020 17:25:42 GMT, David Simms <dsimms at openjdk.org> wrote:

> Valhalla currently do ports

There is a filter for executed platforms, see https://github.com/openjdk/jdk/pull/284. It would be cleaner than hacking out the parts of `submit.yml`, which would set up for merge conflicts as `submit.yml` continues to change upstream.

-------------

PR: https://git.openjdk.java.net/valhalla/pull/246