RFR: 8333477: Delete extra empty spaces in Makefiles

[Erik Joelsson]

On Tue, 4 Jun 2024 07:47:46 GMT, SendaoYan <syan at openjdk.org> wrote:

> Hi all,
>   This PR several extra empty spaces and extra empty lines in several Makefiles. It's trivial fix, no risk.
> 
> Thanks.

Marked as reviewed by erikj (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/19537#pullrequestreview-2096319123