Another spurious friend declaration removed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85997 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/llvm/CodeGen/SlotIndexes.h b/include/llvm/CodeGen/SlotIndexes.h
index f9a2e77..3f175a7 100644
--- a/include/llvm/CodeGen/SlotIndexes.h
+++ b/include/llvm/CodeGen/SlotIndexes.h
@@ -36,8 +36,6 @@
   /// SlotIndex & SlotIndexes classes for the public interface to this
   /// information.
   class IndexListEntry {
-    friend class SlotIndex;
-
   private:
 
     IndexListEntry *next, *prev;