RFR: Removed legacy stuff from Makefile

[Jesper Wilhelmsson]

On Thu, 26 May 2022 17:23:38 GMT, Jesper Wilhelmsson <jwilhelm at openjdk.org> wrote:

> When the old leftover files was removed the Makefile didn't work anymore since the build directory wasn't created. Fixed this and removed all handling of legacy stuff in the Makefile.

Thanks Iris!

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PR: https://git.openjdk.java.net/guide/pull/87