Revert r276069: MSVC bots not happy

llvm-svn: 276074
diff --git a/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp b/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
index 913c0f4..6a21395 100644
--- a/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
+++ b/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
@@ -2922,14 +2922,10 @@
   if (Invalid)
     return nullptr;
 
-  // Note: we substitute into associated constraints later
-  Expr *const UninstantiatedRequiresClause = L->getRequiresClause();
-
   TemplateParameterList *InstL
     = TemplateParameterList::Create(SemaRef.Context, L->getTemplateLoc(),
                                     L->getLAngleLoc(), Params,
-                                    L->getRAngleLoc(),
-                                    UninstantiatedRequiresClause);
+                                    L->getRAngleLoc());
   return InstL;
 }