Revert "runtime: allow update of system stack bounds on callback from C thread"

Revert "runtime: allow update of system stack bounds on callback from C thread"

This reverts CL 525455. The test fails to build on darwin, alpine, and
android.

For #62440.

Change-Id: I39c6b1e16499bd61e0f166de6c6efe7a07961e62
Reviewed-on: https://go-review.googlesource.com/c/go/+/527317
Auto-Submit: Michael Pratt <mpratt@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>