PPC/s390: [stubs] An easier way of defining a stub call interface descriptor.

src/s390/interface-descriptors-s390.cc

Index: src/s390/interface-descriptors-s390.cc
diff --git a/src/s390/interface-descriptors-s390.cc b/src/s390/interface-descriptors-s390.cc
index ca6c1179210996d24791fe598ac72f4ad8f00552..de036cd6bdb646cc8ca7b19dfc0acea74c87e38e 100644
--- a/src/s390/interface-descriptors-s390.cc
+++ b/src/s390/interface-descriptors-s390.cc
@@ -60,9 +60,6 @@ const Register MathPowIntegerDescriptor::exponent() {
 const Register GrowArrayElementsDescriptor::ObjectRegister() { return r2; }
 const Register GrowArrayElementsDescriptor::KeyRegister() { return r5; }
 
-const Register HasPropertyDescriptor::ObjectRegister() { return r2; }
-const Register HasPropertyDescriptor::KeyRegister() { return r5; }
-
 void FastNewClosureDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {r4};