[stubs] Optimize LoadGlobalViaContextStub and StoreGlobalViaContextStub.

src/code-stubs.cc

Index: src/code-stubs.cc
diff --git a/src/code-stubs.cc b/src/code-stubs.cc
index 3b41f9e60934eef6adef9df64667bcc41ea9c939..813869ba3609d2d9c5a5d89072ac2e49ba84f7ca 100644
--- a/src/code-stubs.cc
+++ b/src/code-stubs.cc
@@ -724,20 +724,6 @@ void RegExpConstructResultStub::InitializeDescriptor(
 }
 
 
-void LoadGlobalViaContextStub::InitializeDescriptor(
-    CodeStubDescriptor* descriptor) {
-  // Must never deoptimize.
-  descriptor->Initialize(FUNCTION_ADDR(UnexpectedStubMiss));
-}
-
-
-void StoreGlobalViaContextStub::InitializeDescriptor(
-    CodeStubDescriptor* descriptor) {
-  // Must never deoptimize.
-  descriptor->Initialize(FUNCTION_ADDR(UnexpectedStubMiss));
-}
-
-
 void TransitionElementsKindStub::InitializeDescriptor(
     CodeStubDescriptor* descriptor) {
   descriptor->Initialize(