Revert "Add Ctrl-Enter as an additional key to trigger dev USB boot."

This reverts commit eda04e8c0df44ebb1ed84b1f767f518af97bcdf8.

BUG=chrome-os-partner:8075

Change-Id: I8c6bb237cfa6d087ab4774b41873fd8c87ad0f61
Reviewed-on: https://gerrit.chromium.org/gerrit/16081
Tested-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-by: Ronald G. Minnich <rminnich@chromium.org>
2 files changed