#nowarn to be interpreted consistently in fsi

with nowarn.fsx containing the following:

```fsharp
#nowarn "1104"
let ``@nowarn`` = 1
```

trying to invoke it with

> dotnet fsi nowarn.fsx

getting

> nowarn.fsx(2,5): warning FS1104: Identifiers containing '@' are reserved for use in F# code generation

If I try to do the same by pasting the contents in interactive session, it hides the warning.

The work around is to use `--nowarn` when invoking `fsi`.

Would it make sense to also hide the warnings in the first case?