chore: Remove (now unnecessary) imports. (openmls#1395)

`TryFrom`, `TryInto`, and `FromIterator` are in Rust's 2021 prelude.

Co-authored-by: Konrad Kohbrok <[email protected]>

interop_client/src/main.rs

@@ -3,7 +3,7 @@
 //!
 //! It is based on the Mock client in that repository.
 
-use std::{collections::HashMap, convert::TryFrom, fmt::Display, fs::File, io::Write, sync::Mutex};
+use std::{collections::HashMap, fmt::Display, fs::File, io::Write, sync::Mutex};
 
 use clap::Parser;
 use clap_derive::*;

openmls/src/credentials/mod.rs

@@ -22,10 +22,7 @@
 //! There are multiple [`CredentialType`]s, although OpenMLS currently only
 //! supports the [`BasicCredential`].
 
-use std::{
-    convert::TryFrom,
-    io::{Read, Write},
-};
+use std::io::{Read, Write};
 
 use serde::{Deserialize, Serialize};
 use tls_codec::{TlsDeserialize, TlsSerialize, TlsSize, VLBytes};

openmls/src/framing/public_message.rs

@@ -3,7 +3,7 @@
 //! A PublicMessage is a framing structure for MLS messages. It can contain
 //! Proposals, Commits and application messages.
 
-use std::{convert::TryFrom, io::Write};
+use std::io::Write;
 
 use openmls_traits::{crypto::OpenMlsCrypto, types::Ciphersuite, OpenMlsCryptoProvider};
 use tls_codec::{Serialize as TlsSerializeTrait, TlsDeserialize, TlsSerialize, TlsSize};

openmls/src/framing/public_message_in.rs

@@ -14,10 +14,7 @@ use super::{
 };
 
 use openmls_traits::OpenMlsCryptoProvider;
-use std::{
-    convert::TryFrom,
-    io::{Read, Write},
-};
+use std::io::{Read, Write};
 use tls_codec::{
     Deserialize as TlsDeserializeTrait, Serialize as TlsSerializeTrait, TlsSerialize, TlsSize,
 };

openmls/src/group/tests/kat_transcript_hashes.rs

@@ -3,8 +3,6 @@
 //! See <https://github.com/mlswg/mls-implementations/blob/master/test-vectors.md>
 //! for more description on the test vectors.
 
-use std::convert::TryFrom;
-
 use openmls_rust_crypto::OpenMlsRustCrypto;
 use openmls_traits::{crypto::OpenMlsCrypto, random::OpenMlsRand, OpenMlsCryptoProvider};
 use serde::{self, Deserialize, Serialize};

openmls/src/tree/tests_and_kats/kats/kat_encryption.rs

@@ -79,8 +79,6 @@
 //! Keys](https://github.com/mlswg/mls-protocol/blob/master/draft-ietf-mls-protocol.md#encryption-keys)
 //! section of the specification.
 
-use std::convert::TryFrom;
-
 use itertools::izip;
 use openmls_basic_credential::SignatureKeyPair;
 use openmls_rust_crypto::OpenMlsRustCrypto;

openmls/src/utils.rs

@@ -58,7 +58,6 @@ macro_rules! log_content {
 /// HashMap or a BTreeMap) into a vector of tuples and vice versa.
 pub mod vector_converter {
     use serde::{Deserialize, Deserializer, Serialize, Serializer};
-    use std::iter::FromIterator;
 
     pub fn serialize<'a, T, K, V, S>(target: T, ser: S) -> Result<S::Ok, S::Error>
     where

openmls/src/versions.rs

@@ -3,7 +3,7 @@
 //! Only MLS 1.0 is currently supported.
 
 use serde::{Deserialize, Serialize};
-use std::{convert::TryFrom, fmt};
+use std::fmt;
 use thiserror::Error;
 use tls_codec::{TlsDeserialize, TlsSerialize, TlsSize};
 

traits/src/types.rs

@@ -2,7 +2,7 @@
 //!
 //! This module holds a number of types that are needed by the traits.
 
-use std::{convert::TryFrom, ops::Deref};
+use std::ops::Deref;
 
 use serde::{Deserialize, Serialize};
 use tls_codec::{SecretVLBytes, TlsDeserialize, TlsSerialize, TlsSize, VLBytes};