Reenable GCNotificationTests test (dotnet/corefx#39499)

Undoes dotnet/corefx#39375

Fix dotnet/corefx#39374

Commit migrated from https://github.com/dotnet/corefx/commit/4cb27d38819050bd01576d042f54537887debaa8

diff --git a/src/libraries/System.Runtime/tests/System/GCTests.cs b/src/libraries/System.Runtime/tests/System/GCTests.cs
index 056b580..58d1737 100644 (file)
--- a/src/libraries/System.Runtime/tests/System/GCTests.cs
+++ b/src/libraries/System.Runtime/tests/System/GCTests.cs
@@ -487,7 +487,6 @@ namespace System.Tests
             Assert.Throws<ArgumentOutOfRangeException>(() => GC.WaitForFullGCComplete(-2));
         }
 
-        [ActiveIssue(39374)]
         [Theory]
         [InlineData(true, -1)]
         [InlineData(false, -1)]