mb/google: Remove ChromeEC builds for auron and rambi

The ChromeEC board directories for auron and rambi have been removed
from the latest version of ChromeEC.  Remove them here so the submodule
can be brought forward.

Change-Id: I763d03009f735d3f8aedbeb44788d03714c86102
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/20361
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>

0 files changed, 0 insertions, 0 deletions