Remove obsolete member in src/Middleware/StaticFiles/src/StaticFileResponseContext.cs

[muratg]

Remove this obsolete member in src/Middleware/StaticFiles/src/StaticFileResponseContext.cs:

        [Obsolete("Use the constructor that passes in the HttpContext and IFileInfo parameters: StaticFileResponseContext(HttpContext context, IFileInfo file)", false)]
        public StaticFileResponseContext()
        {

And file a new issue in https://github.com/aspnet/Announcements/issues/ if this is a notable breaking change.

[Tratcher]

@muratg The same with this one, the Obsolete was added in 3.0 preview1 (?). This was also not a type we expected anyone to use directly.

[muratg]

Thanks for the update - Let's keep it obsolete in 3.0 then. We'll remove this in a future release.