[Distributed] unlock test which used to fail on 32bit watch

Author: ktoso

test/Distributed/Runtime/distributed_actor_localSystem.swift

@@ -13,9 +13,6 @@
 // rdar://90373022
 // UNSUPPORTED: OS=watchos
 
-// FIXME(distributed): seems to fail also on simulator on x86_64?
-// REQUIRES: rdar90373022
-
 import Distributed
 
 distributed actor Worker {