<Swing Dev> RFR: 7190589: [macosx] In the test bug4278839 never press ctrl+arrow

[Phil Race]

On Sat, 24 Oct 2020 01:12:16 GMT, Sergey Bylokhov <serb at openjdk.org> wrote:

> After one of the fixes in the bug4278839.java test, Yuri(@yan-too) suggested that the check for the Aqua L&F should be updated to check the macOS instead. That code was needed to move the cursor to the beginning of the test, but since then another fix was integrated:
> https://hg.openjdk.java.net/jdk/jdk/rev/9db62a092725
> The "area.setCaretPosition(0);" has the same purpose and the old code became useless and can be removed.

Marked as reviewed by prr (Reviewer).

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PR: https://git.openjdk.java.net/jdk/pull/848