Revert "gcstress: Limit the number of unwinds."

This reverts commit 52c7e98efe104bfe77b07f7c2c8c778996db02f4.

Reason for revert: Investigating timeout issues.

Bug: 142039427
Change-Id: I6e158e1db94eca3de4603aab9eff51824291cb87
1 file changed