kevin / gru: Remove console history
kevin / gru: Remove console history

Remove console history to save RAM.

BUG=None
BRANCH=Kevin
TEST=Build kevin on gru FW branch, verify 356 bytes free code memory
(was negative).

Change-Id: I4779ddb6780b1b5c2762b1f2a2ad4de64ba33c38
Signed-off-by: Shawn Nematbakhsh <5259333ce42e3ace6a73988cec7115ed9d3a661a@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/385115
Reviewed-by: Aseda Aboagye <12c9b286316a940fd31c24070da5ab64cdd4d0e7@chromium.org>
(cherry picked from commit 124b69f9224166b6e03f95e73c9aea64c184215e)
Reviewed-on: https://chromium-review.googlesource.com/385917

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