removed_params.push_back(false);
    }
  }
  // Remove old resource-type parameters.
  callee.getBody().front().eraseArguments(removed_params);
  // Update function type.
  callee.setFunctionType(FunctionType::get(callee.getContext(),
                                           callee.getBody().getArgumentTypes(),
                                           callee.getResultTypes()));
}