Remove workaround for reference. No longer necessary.

llvm-svn: 58395
diff --git a/clang/test/SemaCXX/const-cast.cpp b/clang/test/SemaCXX/const-cast.cpp
index 90e8ed7..bc3908f 100644
--- a/clang/test/SemaCXX/const-cast.cpp
+++ b/clang/test/SemaCXX/const-cast.cpp
@@ -21,7 +21,7 @@
 {
   // Cast away deep consts and volatiles.
   char ***var2 = const_cast<cppp>(var);
-  char ***const &var3 = static_cast<cpppcr>(var2); // Different bug.
+  char ***const &var3 = var2;
   // Const reference to reference.
   char ***&var4 = const_cast<cpppr>(var3);
   // Drop reference. Intentionally without qualifier change.