Re-enable now-passing test on Linux

DougGregor · DougGregor · commit 44d2f4c08918 · 2021-06-28T17:12:27.000-07:00
diff --git a/test/Concurrency/Runtime/class_resilience.swift b/test/Concurrency/Runtime/class_resilience.swift
@@ -16,7 +16,6 @@
 // UNSUPPORTED: back_deployment_runtime
 
 // XFAIL: windows
-// XFAIL: linux
 // XFAIL: openbsd
 
 import StdlibUnittest
