MIPS: [stubs] Optimize LoadGlobalViaContextStub and StoreGlobalViaContextStub.

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 71be512d7bc0fa3142d7c9014265eb6095f2a690..25c579ccf2044b76272b6a35cd8e37c7d2e18645 100644
--- a/src/mips/interface-descriptors-mips.cc
+++ b/src/mips/interface-descriptors-mips.cc
@@ -36,12 +36,10 @@ const Register VectorStoreICDescriptor::VectorRegister() { return a3; }
 const Register StoreTransitionDescriptor::MapRegister() { return a3; }
 
 
-const Register LoadGlobalViaContextDescriptor::DepthRegister() { return a1; }
 const Register LoadGlobalViaContextDescriptor::SlotRegister() { return a2; }
 const Register LoadGlobalViaContextDescriptor::NameRegister() { return a3; }
 
 
-const Register StoreGlobalViaContextDescriptor::DepthRegister() { return a1; }
 const Register StoreGlobalViaContextDescriptor::SlotRegister() { return a2; }
 const Register StoreGlobalViaContextDescriptor::NameRegister() { return a3; }
 const Register StoreGlobalViaContextDescriptor::ValueRegister() { return a0; }