[automerge] Revert "Time out and dump stacks from R8 processes after 30 minutes" 2p: b18a037f

Original change: https://googleplex-android-review.googlesource.com/c/platform/build/soong/+/16426547

Bug: 207767452
Change-Id: I33de7faa8e8727e113a7baccb58da00d532eb330
Merged-In: Ia0c3826aea3288e9db3bdbd4955e1e16c0a38fe3