[builtins] Port parameter and argument-related code stubs to CSA

src/x64/interface-descriptors-x64.cc

Index: src/x64/interface-descriptors-x64.cc
diff --git a/src/x64/interface-descriptors-x64.cc b/src/x64/interface-descriptors-x64.cc
index 615e6d6bd29a53a7a6a19ffa6e745ede4caea596..b111b2cdcccc7f510e6cac890aea18c6cf7fd9cf 100644
--- a/src/x64/interface-descriptors-x64.cc
+++ b/src/x64/interface-descriptors-x64.cc
@@ -69,25 +69,6 @@ void FastNewClosureDescriptor::InitializePlatformSpecific(
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
-void FastNewRestParameterDescriptor::InitializePlatformSpecific(
-    CallInterfaceDescriptorData* data) {
-  Register registers[] = {rdi};
-  data->InitializePlatformSpecific(arraysize(registers), registers);
-}
-
-void FastNewSloppyArgumentsDescriptor::InitializePlatformSpecific(
-    CallInterfaceDescriptorData* data) {
-  Register registers[] = {rdi};
-  data->InitializePlatformSpecific(arraysize(registers), registers);
-}
-
-void FastNewStrictArgumentsDescriptor::InitializePlatformSpecific(
-    CallInterfaceDescriptorData* data) {
-  Register registers[] = {rdi};
-  data->InitializePlatformSpecific(arraysize(registers), registers);
-}
-
-
 void TypeofDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {rbx};