Revert "[ObjC] Use empty Objective-C collection literal constants when"

This reverts commit r300389. There were mistakes in the changes I made
to CodeGen.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@300391 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 0 insertions, 14 deletions

diff --git a/include/clang/Basic/ObjCRuntime.h b/include/clang/Basic/ObjCRuntime.h
index 8dc259c7ab..78fc899882 100644
--- a/include/clang/Basic/ObjCRuntime.h
+++ b/include/clang/Basic/ObjCRuntime.h
@@ -326,20 +326,6 @@ public:
     }
   }
 
-  /// Are the empty collection symbols available?
-  bool hasEmptyCollections() const {
-    switch (getKind()) {
-    default:
-      return false;
-    case MacOSX:
-      return getVersion() >= VersionTuple(10, 11);
-    case iOS:
-      return getVersion() >= VersionTuple(9);
-    case WatchOS:
-      return getVersion() >= VersionTuple(2);
-    }
-  }
-
   /// \brief Try to parse an Objective-C runtime specification from the given
   /// string.
   ///