Revert "Improve stack unwinding during gcstress tests."

This reverts commit 357d4db493467e4dd74b2ba1d4b8d7c80f8409b6.

Reason for revert: Investigating timeout issues.

Bug: 142039427
Change-Id: Iec1df893c75c6ab5b8cd52ba4b617acff57c3049
4 files changed