Revert accidental change that removed the Network overlay

DougGregor · DougGregor · commit 660d124cdae4 · 2020-01-23T22:05:41.000-08:00
diff --git a/stdlib/public/Darwin/CMakeLists.txt b/stdlib/public/Darwin/CMakeLists.txt
@@ -44,7 +44,7 @@ set(all_overlays
   MetalKit
   ModelIO
   NaturalLanguage
-#  Network
+  Network
   ObjectiveC
   OpenCL
   os
