Revert r174246, accidentally committed.

This reverts commit 1513eb9284c23acfd19cf742b95996fbb11ca741.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@174249 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGDecl.cpp b/lib/CodeGen/CGDecl.cpp
index 75b45cc..a43a383 100644
--- a/lib/CodeGen/CGDecl.cpp
+++ b/lib/CodeGen/CGDecl.cpp
@@ -78,18 +78,14 @@
   case Decl::CXXRecord: // struct/union/class X; [C++]
   case Decl::Using:          // using X; [C++]
   case Decl::UsingShadow:
+  case Decl::UsingDirective: // using namespace X; [C++]
   case Decl::NamespaceAlias:
   case Decl::StaticAssert: // static_assert(X, ""); [C++0x]
   case Decl::Label:        // __label__ x;
   case Decl::Import:
     // None of these decls require codegen support.
     return;
-  case Decl::UsingDirective: { // using namespace X; [C++]
-    if (CGDebugInfo *DI = getDebugInfo()) {
-      DI->EmitUsingDirectiveDecl(cast<UsingDirectiveDecl>(D));
-    }
-    return;
-  }
+
   case Decl::Var: {
     const VarDecl &VD = cast<VarDecl>(D);
     assert(VD.isLocalVarDecl() &&