Revert "Debug: Allow stepping into on a given call frame."

This reverts commit r17095.
There were test failures (flaky).

BUG=chromium:296963
R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/26703009

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@17125 ce2b1a6d-e550-0410-aec6-3dcde31c8c00