RFR: 8305321: Remove unused exports in java.desktop [v3]

[Alexey Ivanov]

On Fri, 13 Oct 2023 14:38:59 GMT, Daniel Jeliński <djelinski at openjdk.org> wrote:

> Should I move the cleanup of Color as well?

Removing `colorValueID` could be left here, I think: it removes an exported symbol which is no longer used.

In addition to it, it makes `Java_java_awt_Color_initIDs` empty.

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PR Review Comment: https://git.openjdk.org/jdk/pull/13261#discussion_r1358369477