RFR: Switch to using GitLab approvals instead of award_emojis

[Magnus Ihse Bursie]

On Mon, 2 Nov 2020 13:30:11 GMT, Erik Helin <ehelin at openjdk.org> wrote:

>> Later versions of GitLab allows Merge Request approvals even in the CE version, so we can start to use that instead of the award-emoji workaround used previously.
>
> Looks good!

So this will remove the ability to review using emojis? This sounds like there need to be a "flag day" for switching review methods. (I'm not saying this is bad, just verifying that I understand the implications correctly.)

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PR: https://git.openjdk.java.net/skara/pull/937