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diff --git a/vendor/http/src/header/mod.rs b/vendor/http/src/header/mod.rs
deleted file mode 100644
index 5d405767..00000000
--- a/vendor/http/src/header/mod.rs
+++ /dev/null
@@ -1,176 +0,0 @@
-//! HTTP header types
-//!
-//! The module provides [`HeaderName`], [`HeaderMap`], and a number of types
-//! used for interacting with `HeaderMap`. These types allow representing both
-//! HTTP/1 and HTTP/2 headers.
-//!
-//! # `HeaderName`
-//!
-//! The `HeaderName` type represents both standard header names as well as
-//! custom header names. The type handles the case insensitive nature of header
-//! names and is used as the key portion of `HeaderMap`. Header names are
-//! normalized to lower case. In other words, when creating a `HeaderName` with
-//! a string, even if upper case characters are included, when getting a string
-//! representation of the `HeaderName`, it will be all lower case. This allows
-//! for faster `HeaderMap` comparison operations.
-//!
-//! The internal representation is optimized to efficiently handle the cases
-//! most commonly encountered when working with HTTP. Standard header names are
-//! special cased and are represented internally as an enum. Short custom
-//! headers will be stored directly in the `HeaderName` struct and will not
-//! incur any allocation overhead, however longer strings will require an
-//! allocation for storage.
-//!
-//! ## Limitations
-//!
-//! `HeaderName` has a max length of 32,768 for header names. Attempting to
-//! parse longer names will result in a panic.
-//!
-//! # `HeaderMap`
-//!
-//! `HeaderMap` is a map structure of header names highly optimized for use
-//! cases common with HTTP. It is a [multimap] structure, where each header name
-//! may have multiple associated header values. Given this, some of the APIs
-//! diverge from [`HashMap`].
-//!
-//! ## Overview
-//!
-//! Just like `HashMap` in Rust's stdlib, `HeaderMap` is based on [Robin Hood
-//! hashing]. This algorithm tends to reduce the worst case search times in the
-//! table and enables high load factors without seriously affecting performance.
-//! Internally, keys and values are stored in vectors. As such, each insertion
-//! will not incur allocation overhead. However, once the underlying vector
-//! storage is full, a larger vector must be allocated and all values copied.
-//!
-//! ## Deterministic ordering
-//!
-//! Unlike Rust's `HashMap`, values in `HeaderMap` are deterministically
-//! ordered. Roughly, values are ordered by insertion. This means that a
-//! function that deterministically operates on a header map can rely on the
-//! iteration order to remain consistent across processes and platforms.
-//!
-//! ## Adaptive hashing
-//!
-//! `HeaderMap` uses an adaptive hashing strategy in order to efficiently handle
-//! most common cases. All standard headers have statically computed hash values
-//! which removes the need to perform any hashing of these headers at runtime.
-//! The default hash function emphasizes performance over robustness. However,
-//! `HeaderMap` detects high collision rates and switches to a secure hash
-//! function in those events. The threshold is set such that only denial of
-//! service attacks should trigger it.
-//!
-//! ## Limitations
-//!
-//! `HeaderMap` can store a maximum of 32,768 headers (header name / value
-//! pairs). Attempting to insert more will result in a panic.
-//!
-//! [`HeaderName`]: struct.HeaderName.html
-//! [`HeaderMap`]: struct.HeaderMap.html
-//! [multimap]: https://en.wikipedia.org/wiki/Multimap
-//! [`HashMap`]: https://doc.rust-lang.org/std/collections/struct.HashMap.html
-//! [Robin Hood hashing]: https://en.wikipedia.org/wiki/Hash_table#Robin_Hood_hashing
-
-mod map;
-mod name;
-mod value;
-
-pub use self::map::{
-    AsHeaderName, Drain, Entry, GetAll, HeaderMap, IntoHeaderName, IntoIter, Iter, IterMut, Keys,
-    MaxSizeReached, OccupiedEntry, VacantEntry, ValueDrain, ValueIter, ValueIterMut, Values,
-    ValuesMut,
-};
-pub use self::name::{HeaderName, InvalidHeaderName};
-pub use self::value::{HeaderValue, InvalidHeaderValue, ToStrError};
-
-// Use header name constants
-#[rustfmt::skip]
-pub use self::name::{
-    ACCEPT,
-    ACCEPT_CHARSET,
-    ACCEPT_ENCODING,
-    ACCEPT_LANGUAGE,
-    ACCEPT_RANGES,
-    ACCESS_CONTROL_ALLOW_CREDENTIALS,
-    ACCESS_CONTROL_ALLOW_HEADERS,
-    ACCESS_CONTROL_ALLOW_METHODS,
-    ACCESS_CONTROL_ALLOW_ORIGIN,
-    ACCESS_CONTROL_EXPOSE_HEADERS,
-    ACCESS_CONTROL_MAX_AGE,
-    ACCESS_CONTROL_REQUEST_HEADERS,
-    ACCESS_CONTROL_REQUEST_METHOD,
-    AGE,
-    ALLOW,
-    ALT_SVC,
-    AUTHORIZATION,
-    CACHE_CONTROL,
-    CACHE_STATUS,
-    CDN_CACHE_CONTROL,
-    CONNECTION,
-    CONTENT_DISPOSITION,
-    CONTENT_ENCODING,
-    CONTENT_LANGUAGE,
-    CONTENT_LENGTH,
-    CONTENT_LOCATION,
-    CONTENT_RANGE,
-    CONTENT_SECURITY_POLICY,
-    CONTENT_SECURITY_POLICY_REPORT_ONLY,
-    CONTENT_TYPE,
-    COOKIE,
-    DNT,
-    DATE,
-    ETAG,
-    EXPECT,
-    EXPIRES,
-    FORWARDED,
-    FROM,
-    HOST,
-    IF_MATCH,
-    IF_MODIFIED_SINCE,
-    IF_NONE_MATCH,
-    IF_RANGE,
-    IF_UNMODIFIED_SINCE,
-    LAST_MODIFIED,
-    LINK,
-    LOCATION,
-    MAX_FORWARDS,
-    ORIGIN,
-    PRAGMA,
-    PROXY_AUTHENTICATE,
-    PROXY_AUTHORIZATION,
-    PUBLIC_KEY_PINS,
-    PUBLIC_KEY_PINS_REPORT_ONLY,
-    RANGE,
-    REFERER,
-    REFERRER_POLICY,
-    REFRESH,
-    RETRY_AFTER,
-    SEC_WEBSOCKET_ACCEPT,
-    SEC_WEBSOCKET_EXTENSIONS,
-    SEC_WEBSOCKET_KEY,
-    SEC_WEBSOCKET_PROTOCOL,
-    SEC_WEBSOCKET_VERSION,
-    SERVER,
-    SET_COOKIE,
-    STRICT_TRANSPORT_SECURITY,
-    TE,
-    TRAILER,
-    TRANSFER_ENCODING,
-    UPGRADE,
-    UPGRADE_INSECURE_REQUESTS,
-    USER_AGENT,
-    VARY,
-    VIA,
-    WARNING,
-    WWW_AUTHENTICATE,
-    X_CONTENT_TYPE_OPTIONS,
-    X_DNS_PREFETCH_CONTROL,
-    X_FRAME_OPTIONS,
-    X_XSS_PROTECTION,
-};
-
-/// Maximum length of a header name
-///
-/// Generally, 64kb for a header name is WAY too much than would ever be needed
-/// in practice. Restricting it to this size enables using `u16` values to
-/// represent offsets when dealing with header names.
-const MAX_HEADER_NAME_LEN: usize = (1 << 16) - 1;