A64: Remove a couple of already addressed TODOs.

src/a64/code-stubs-a64.cc

Index: src/a64/code-stubs-a64.cc
diff --git a/src/a64/code-stubs-a64.cc b/src/a64/code-stubs-a64.cc
index 21bb2f85bb722d0a9f964b01481384d1c5d07434..a13293eac7650b76f39db2dc4e7e5d249827c3eb 100644
--- a/src/a64/code-stubs-a64.cc
+++ b/src/a64/code-stubs-a64.cc
@@ -1884,8 +1884,6 @@ void JSEntryStub::GenerateBody(MacroAssembler* masm, bool is_construct) {
   // x2: receiver.
   // x3: argc.
   // x4: argv.
-  // TODO(jbramley): The latest ARM code checks is_construct and conditionally
-  // uses construct_entry. We probably need to do the same here.
   ExternalReference entry(is_construct ? Builtins::kJSConstructEntryTrampoline
                                        : Builtins::kJSEntryTrampoline,
                           isolate);