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

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 f041b7d109485c14cc05069f42fdc545d2f91d9f..a3b39cf30c259578679e2c9cdd088c66d84ffbb0 100644
--- a/src/mips/interface-descriptors-mips.cc
+++ b/src/mips/interface-descriptors-mips.cc
@@ -68,27 +68,6 @@ void FastNewClosureDescriptor::InitializePlatformSpecific(
   data->InitializePlatformSpecific(arraysize(registers), registers, NULL);
 }
 
-void FastNewRestParameterDescriptor::InitializePlatformSpecific(
-    CallInterfaceDescriptorData* data) {
-  Register registers[] = {a1};
-  data->InitializePlatformSpecific(arraysize(registers), registers, NULL);
-}
-
-
-void FastNewSloppyArgumentsDescriptor::InitializePlatformSpecific(
-    CallInterfaceDescriptorData* data) {
-  Register registers[] = {a1};
-  data->InitializePlatformSpecific(arraysize(registers), registers, NULL);
-}
-
-
-void FastNewStrictArgumentsDescriptor::InitializePlatformSpecific(
-    CallInterfaceDescriptorData* data) {
-  Register registers[] = {a1};
-  data->InitializePlatformSpecific(arraysize(registers), registers, NULL);
-}
-
-
 // static
 const Register TypeConversionDescriptor::ArgumentRegister() { return a0; }