8ac332b4

By: Tom Sydney Kerckhove <syd@cs-syd.eu>

Remove HeapOverflow handler: allocation-limit exceptions are not catchable

Tested empirically: GHC.Conc.enableAllocationLimit throws HeapOverflow
as an uncatchable async exception that terminates the process regardless
of any catches wrapping the computation.

Suite timing

Time to Start Worker time Duration Time to finish Idle
Config 0s 2s 2s 2s 0s
Eval 2s 46s 46s 48s 0s
Build 1m26s 31m54s 19h10m02s 19h11m28s 37s
Suite 0s 32m43s 19h11m28s 19h11m28s 18h57m43s