Integrated: 7510: Remove 2020-06 platform

[Marcus Hirt]

On Fri, 14 Jan 2022 13:44:04 GMT, Marcus Hirt <hirt at openjdk.org> wrote:

> Last platform for JDK 8.

This pull request has now been integrated.

Changeset: 80fce51c
Author:    Marcus Hirt <hirt at openjdk.org>
URL:       https://git.openjdk.java.net/jmc/commit/80fce51c6dc3b5c368df70d5afb10a300fbe005d
Stats:     155 lines in 5 files changed: 0 ins; 155 del; 0 mod

7510: Remove 2020-06 platform

Reviewed-by: aptmac

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PR: https://git.openjdk.java.net/jmc/pull/358