LAKITU: Skip cleaning i686-pc-linux-gnu for bootstrapping

This toolchain doesn't exist when bootstrapping, so cleaning it
isn't necessary when bootstrapping. However, the clean behavior puts
crossdev in an invalid state when bootstrapping, which causes later
crossdev usage to fail.

BUG=b/257271340
TEST=presubmit
RELEASE_NOTE=None

Change-Id: I27656188d7eb28745016e4749fdba5b5be604666
Reviewed-on: https://cos-review.googlesource.com/c/third_party/platform/crosutils/+/40233
Reviewed-by: Oleksandr Tymoshenko <ovt@google.com>
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
Reviewed-by: Vaibhav Rustagi <vaibhavrustagi@google.com>
1 file changed