[stubs] Further optimize Load/StoreGlobalViaContext stubs.

src/ia32/interface-descriptors-ia32.cc

Index: src/ia32/interface-descriptors-ia32.cc
diff --git a/src/ia32/interface-descriptors-ia32.cc b/src/ia32/interface-descriptors-ia32.cc
index a91e1efec8a3c2f1da2df66edac4b280c9944478..61508ee596bf44bf49248e3f2fed3530d40561f8 100644
--- a/src/ia32/interface-descriptors-ia32.cc
+++ b/src/ia32/interface-descriptors-ia32.cc
@@ -38,11 +38,9 @@ const Register StoreTransitionDescriptor::MapRegister() {
 
 
 const Register LoadGlobalViaContextDescriptor::SlotRegister() { return ebx; }
-const Register LoadGlobalViaContextDescriptor::NameRegister() { return ecx; }
 
 
 const Register StoreGlobalViaContextDescriptor::SlotRegister() { return ebx; }
-const Register StoreGlobalViaContextDescriptor::NameRegister() { return ecx; }
 const Register StoreGlobalViaContextDescriptor::ValueRegister() { return eax; }