[stubs] A new approach to TF stubs

src/arm64/interface-descriptors-arm64.cc

Index: src/arm64/interface-descriptors-arm64.cc
diff --git a/src/arm64/interface-descriptors-arm64.cc b/src/arm64/interface-descriptors-arm64.cc
index 39db443504b46ba6741e6aaf1213c0b2561331b5..114040f510b8a4522a2061f88ce55764c324481b 100644
--- a/src/arm64/interface-descriptors-arm64.cc
+++ b/src/arm64/interface-descriptors-arm64.cc
@@ -450,27 +450,6 @@ void ApiAccessorDescriptor::InitializePlatformSpecific(
 }
 
 
-void MathRoundVariantCallFromUnoptimizedCodeDescriptor::
-    InitializePlatformSpecific(CallInterfaceDescriptorData* data) {
-  Register registers[] = {
-      x1,  // math rounding function
-      x3,  // vector slot id
-  };
-  data->InitializePlatformSpecific(arraysize(registers), registers);
-}
-
-
-void MathRoundVariantCallFromOptimizedCodeDescriptor::
-    InitializePlatformSpecific(CallInterfaceDescriptorData* data) {
-  Register registers[] = {
-      x1,  // math rounding function
-      x3,  // vector slot id
-      x4,  // type vector
-  };
-  data->InitializePlatformSpecific(arraysize(registers), registers);
-}
-
-
 void InterpreterPushArgsAndCallDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {