Revert of [test] add --no-harness option to debugger tests. (patchset #1 id:1 of https://codereview.chromium.org/2831083003/ )

Reason for revert:
Should define its own NO_HARNESS_PATTERN. See comments.

Original issue's description:
> [test] add --no-harness option to debugger tests.
>
> Review-Url: https://codereview.chromium.org/2831083003
> Cr-Commit-Position: refs/heads/master@{#44774}
> Committed: https://chromium.googlesource.com/v8/v8/+/43c20d4cc566c68ce0b566cad0ac6fa92bba8eff

TBR=caitp@igalia.com,yangguo@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.

Review-Url: https://codereview.chromium.org/2871593002
Cr-Commit-Position: refs/heads/master@{#45163}