[stubs] Port LoadFunctionPrototypeStub to CSA

src/arm64/macro-assembler-arm64.h

Index: src/arm64/macro-assembler-arm64.h
diff --git a/src/arm64/macro-assembler-arm64.h b/src/arm64/macro-assembler-arm64.h
index 68a23bf1fef5a735a69bbd800415856a2836c792..9104d818619465a8a57211614d07df24dc8d1c5e 100644
--- a/src/arm64/macro-assembler-arm64.h
+++ b/src/arm64/macro-assembler-arm64.h
@@ -1372,9 +1372,6 @@ class MacroAssembler : public Assembler {
   void GetMapConstructor(Register result, Register map, Register temp,
                          Register temp2);
 
-  void TryGetFunctionPrototype(Register function, Register result,
-                               Register scratch, Label* miss);
-
   // Compare object type for heap object.  heap_object contains a non-Smi
   // whose object type should be compared with the given type.  This both
   // sets the flags and leaves the object type in the type_reg register.