s3s: http: full_body: remove default limit

pub struct LengthLimit(pub u64);

pub const DEFAULT_LENGTH_LIMIT: u64 = 2 * 1024 * 1024;

pub struct FullBody(pub Bytes);

impl FullBody {

    pub async fn extract_with_body(req: &Request, body: Body) -> S3Result<Self> {

        let limit = match req.extensions().get::<LengthLimit>() {

            Some(lim) => lim.0,

            None => DEFAULT_LENGTH_LIMIT,

            None => {

                // FIXME: unbounded memory allocation

                let bytes = hyper::body::to_bytes(body).await.map_err(S3Error::internal_error)?;

                return Ok(Self(bytes));

            }

        };

        let content_length = req

        Self {

            s3,

            auth: None,

            full_body_limit: crate::http::DEFAULT_LENGTH_LIMIT,

            full_body_limit: 0,

            base_domain: None,

        }

    }