atlas: remove obsolete comment
atlas: remove obsolete comment

we're going to keep the ability to turn on the blue LED channel for
testing the hardware, if nothing else.

BUG=b:130447080
BRANCH=none
TEST=no functional change

Change-Id: Ibc30c0c39cbac4a539ea7fbd55d815f66d098a5a
Signed-off-by: Caveh Jalali <08e24a66aefda7a55ca7d73f8903e0fb16eec763@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1570611
Commit-Ready: Caveh Jalali <08e24a66aefda7a55ca7d73f8903e0fb16eec763@google.com>
Tested-by: Caveh Jalali <08e24a66aefda7a55ca7d73f8903e0fb16eec763@google.com>
Reviewed-by: Aseda Aboagye <12c9b286316a940fd31c24070da5ab64cdd4d0e7@chromium.org>

coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec