[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 3123b6a50d29227d0f0722d2530e785d63a5116a..2c0c29a4f6f9beb3dc85b883a6f8972c1f2fdcaf 100644
--- a/src/arm64/interface-descriptors-arm64.cc
+++ b/src/arm64/interface-descriptors-arm64.cc
@@ -449,27 +449,6 @@ 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[] = {