git: openjdk/jfx-sandbox: metal: remove IS_MAC check

[Ambarish Rapte]

Changeset: a6c2d69b
Branch: metal
Author:    Ambarish Rapte <arapte at openjdk.org>
Date:      2025-08-05 06:24:22 +0000
URL:       https://git.openjdk.org/jfx-sandbox/commit/a6c2d69b4854d6452c4ca79ab9bc056f54de4123

remove IS_MAC check

! build.gradle