[runtime] Kill %Arguments and %ArgumentsLength.

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 c06d8a0fa4ec350b1db4cdcec0c3873b83560a9c..f88fa75da07230f0a62d0410f8a2072bf1f8d342 100644
--- a/src/arm64/interface-descriptors-arm64.cc
+++ b/src/arm64/interface-descriptors-arm64.cc
@@ -56,10 +56,6 @@ const Register StringCompareDescriptor::LeftRegister() { return x1; }
 const Register StringCompareDescriptor::RightRegister() { return x0; }
 
 
-const Register ArgumentsAccessReadDescriptor::index() { return x1; }
-const Register ArgumentsAccessReadDescriptor::parameter_count() { return x0; }
-
-
 const Register ArgumentsAccessNewDescriptor::function() { return x1; }
 const Register ArgumentsAccessNewDescriptor::parameter_count() { return x2; }
 const Register ArgumentsAccessNewDescriptor::parameter_pointer() { return x3; }