PPC/s390: [builtins] Port parameter and argument-related code stubs to CSA

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 301f33897c5ee29a93558e10c2c497ac5903d063..45ce09e7c8f8b2a40803bcfdb696e327b9dac8e2 100644
--- a/src/s390/interface-descriptors-s390.cc
+++ b/src/s390/interface-descriptors-s390.cc
@@ -65,24 +65,6 @@ void FastNewClosureDescriptor::InitializePlatformSpecific(
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
-void FastNewRestParameterDescriptor::InitializePlatformSpecific(
-    CallInterfaceDescriptorData* data) {
-  Register registers[] = {r3};
-  data->InitializePlatformSpecific(arraysize(registers), registers);
-}
-
-void FastNewSloppyArgumentsDescriptor::InitializePlatformSpecific(
-    CallInterfaceDescriptorData* data) {
-  Register registers[] = {r3};
-  data->InitializePlatformSpecific(arraysize(registers), registers);
-}
-
-void FastNewStrictArgumentsDescriptor::InitializePlatformSpecific(
-    CallInterfaceDescriptorData* data) {
-  Register registers[] = {r3};
-  data->InitializePlatformSpecific(arraysize(registers), registers);
-}
-
 // static
 const Register TypeConversionDescriptor::ArgumentRegister() { return r2; }