IdentifierResolver: Remove an unnecessary include and an unused parameter.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@170297 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/IdentifierResolver.cpp b/lib/Sema/IdentifierResolver.cpp
index 5100fcb..6f5ddca 100644
--- a/lib/Sema/IdentifierResolver.cpp
+++ b/lib/Sema/IdentifierResolver.cpp
@@ -14,7 +14,6 @@
 
 #include "clang/Sema/IdentifierResolver.h"
 #include "clang/AST/Decl.h"
-#include "clang/AST/DeclObjC.h"
 #include "clang/Basic/LangOptions.h"
 #include "clang/Lex/ExternalPreprocessorSource.h"
 #include "clang/Lex/Preprocessor.h"
@@ -108,8 +107,7 @@
 /// isDeclInScope - If 'Ctx' is a function/method, isDeclInScope returns true
 /// if 'D' is in Scope 'S', otherwise 'S' is ignored and isDeclInScope returns
 /// true if 'D' belongs to the given declaration context.
-bool IdentifierResolver::isDeclInScope(Decl *D, DeclContext *Ctx,
-                                       ASTContext &Context, Scope *S,
+bool IdentifierResolver::isDeclInScope(Decl *D, DeclContext *Ctx, Scope *S,
                              bool ExplicitInstantiationOrSpecialization) const {
   Ctx = Ctx->getRedeclContext();