Remove unused variable. Thanks to Dmitri Gribenko for noticing it.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@156715 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaDeclAttr.cpp b/lib/Sema/SemaDeclAttr.cpp
index 9351650..de0e2d9 100644
--- a/lib/Sema/SemaDeclAttr.cpp
+++ b/lib/Sema/SemaDeclAttr.cpp
@@ -4023,10 +4023,8 @@
 void Sema::ProcessDeclAttributeList(Scope *S, Decl *D,
                                     const AttributeList *AttrList,
                                     bool NonInheritable, bool Inheritable) {
-  SmallVector<const AttributeList*, 4> attrs;
   for (const AttributeList* l = AttrList; l; l = l->getNext()) {
     ProcessDeclAttribute(*this, S, D, *l, NonInheritable, Inheritable);
-    attrs.push_back(l);
   }
 
   // GCC accepts