Reapply "Eliminate dependencies on assemblers and code stubs in precompiled runtime."

runtime/vm/runtime_entry_arm64.cc

Index: runtime/vm/runtime_entry_arm64.cc
diff --git a/runtime/vm/runtime_entry_arm64.cc b/runtime/vm/runtime_entry_arm64.cc
index a8e9e908937ee6cb62c89733be999f11fc2398ea..2f66bdacb977d706c79b75e7627ffee8b99f2565 100644
--- a/runtime/vm/runtime_entry_arm64.cc
+++ b/runtime/vm/runtime_entry_arm64.cc
@@ -36,6 +36,7 @@ uword RuntimeEntry::GetEntryPoint() const {
   return entry;
 }
 
+#if !defined(DART_PRECOMPILED_RUNTIME)
 // Generate code to call into the stub which will call the runtime
 // function. Input for the stub is as follows:
 //   SP : points to the arguments and return value array.
@@ -71,6 +72,7 @@ void RuntimeEntry::Call(Assembler* assembler, intptr_t argument_count) const {
     __ BranchLinkToRuntime();
   }
 }
+#endif  // !defined(DART_PRECOMPILED_RUNTIME)
 
 }  // namespace dart