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

src/mips/interface-descriptors-mips.cc

Index: src/mips/interface-descriptors-mips.cc
diff --git a/src/mips/interface-descriptors-mips.cc b/src/mips/interface-descriptors-mips.cc
index 91690497cdb54c003b09e0541a26679283f105b4..f0618ad98109626bddfa051a176ae8a27412998a 100644
--- a/src/mips/interface-descriptors-mips.cc
+++ b/src/mips/interface-descriptors-mips.cc
@@ -37,11 +37,9 @@ const Register StoreTransitionDescriptor::MapRegister() { return a3; }
 
 
 const Register LoadGlobalViaContextDescriptor::SlotRegister() { return a2; }
-const Register LoadGlobalViaContextDescriptor::NameRegister() { return a3; }
 
 
 const Register StoreGlobalViaContextDescriptor::SlotRegister() { return a2; }
-const Register StoreGlobalViaContextDescriptor::NameRegister() { return a3; }
 const Register StoreGlobalViaContextDescriptor::ValueRegister() { return a0; }