[stubs] Don't pass name to Load/StoreGlobalViaContext stubs.

src/arm64/interface-descriptors-arm64.cc

Index: src/arm64/interface-descriptors-arm64.cc
diff --git a/src/arm64/interface-descriptors-arm64.cc b/src/arm64/interface-descriptors-arm64.cc
index a3366cd10599b42c6ffac20be1f77984885bb57d..d34478389152a49381f97c87e3510d37bf3fac35 100644
--- a/src/arm64/interface-descriptors-arm64.cc
+++ b/src/arm64/interface-descriptors-arm64.cc
@@ -37,11 +37,9 @@ const Register StoreTransitionDescriptor::MapRegister() { return x3; }
 
 
 const Register LoadGlobalViaContextDescriptor::SlotRegister() { return x2; }
-const Register LoadGlobalViaContextDescriptor::NameRegister() { return x3; }
 
 
 const Register StoreGlobalViaContextDescriptor::SlotRegister() { return x2; }
-const Register StoreGlobalViaContextDescriptor::NameRegister() { return x3; }
 const Register StoreGlobalViaContextDescriptor::ValueRegister() { return x0; }