Missing codefix with 'This may be converted to an async function' suggestion diagnostic

Is there any way to remove this specific tooltip message? It would be great to add this option. Thanks.
![102495189-78b33700-407e-11eb-96c5-b7bd10999bca](https://user-images.githubusercontent.com/5759067/102591186-4b1bcb80-411a-11eb-99ba-2bd3f63374ae.png)
