Revert "[autotest] Enable Chameleon suites to run nightly on >=tot-1 branches"

This reverts commit a807c75fb32acffc54c5b14231b9ab3004efb39c.

Almost all the Chameleon tests fail on R42. Most of the failures fall into:
- The xmlrpc server won't start
- method display.take_external_screenshot not supported
- freon: get_external_connector_name not implemented

Revert the change for now until the tests are more stable.

BUG=None
TEST=None

Change-Id: I8a237a52e2a3ecd70f9fdd58ea7e4efa3cf58cbd
Reviewed-on: https://chromium-review.googlesource.com/263381
Reviewed-by: Yuli Huang <yuli@chromium.org>
Commit-Queue: Hung-ying Tyan <tyanh@chromium.org>
Tested-by: Hung-ying Tyan <tyanh@chromium.org>
1 file changed