[Bisection] Remove unused endpoint
[Bisection] Remove unused endpoint

Bug:1295566
Change-Id: I0c41a2ba6f784a9262e87edebb5b02c6589a199c
Reviewed-on: https://chromium-review.googlesource.com/c/infra/luci/luci-go/+/3985006
Commit-Queue: Anne Redulla <c786107a51130b8d4a9709de2a801893d25ea762@google.com>
Auto-Submit: Tuan Nguyen <7f5d2f4f6ce87649784e35ad551490ab8d89e8eb@google.com>
Reviewed-by: Anne Redulla <c786107a51130b8d4a9709de2a801893d25ea762@google.com>

luci/luci-go,luci/luci-go,luci/luci-go,luci/luci-go,luci/luci-go,luci/luci-go