CQ: disable broken cheza pre-cq
CQ: disable broken cheza pre-cq

cheza is broken in ToT, removing it from the mandatory pre-CQ configs
for the EC until it's working again.

BRANCH=None
BUG=chromium:957280
TEST=None

Change-Id: I7276ee1a5e7e903d0d0343b3a8b59d88df6ef791
Signed-off-by: Nicolas Norvez <3001a977f47a2bc94ec05551872e2ce88b323556@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/1586732
Reviewed-by: Mathew King <5f5c121488ff77c128d954b29ebebffa1909e0f6@chromium.org>
Reviewed-by: Jason Clinton <903dc7ec7b1e0549bc200a3278469a1b3add1d8d@chromium.org>
Reviewed-by: Sean Abraham <175a5718c779173dfba7a5f72889805f1af1d4f5@chromium.org>
Tested-by: Nicolas Boichat <f3daba1cdc403799935674d3cd4b0e5bd1804232@chromium.org>

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