serial_exit: punt unused prototype
No code defines or calls this, so drop the prototype. Signed-off-by: NMike Frysinger <vapier@gentoo.org> Acked-by: NSimon Glass <sjg@chromium.org>
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No code defines or calls this, so drop the prototype. Signed-off-by: NMike Frysinger <vapier@gentoo.org> Acked-by: NSimon Glass <sjg@chromium.org>