Rollup merge of #105537 - kadiwa4:remove_some_imports, r=fee1-dead

compiler: remove unnecessary imports and qualified paths

Some of these imports were necessary before Edition 2021, others were already in the prelude.

I hope it's fine that this PR is so spread-out across files :/

2 files changed, 1 insertions, 2 deletions

diff --git a/compiler/rustc_session/src/config.rs b/compiler/rustc_session/src/config.rs
index 7a20100fd31..6de564a3a06 100644
--- a/compiler/rustc_session/src/config.rs
+++ b/compiler/rustc_session/src/config.rs
@@ -32,7 +32,7 @@ use std::collections::btree_map::{
 use std::collections::{BTreeMap, BTreeSet};
 use std::fmt;
 use std::hash::Hash;
-use std::iter::{self, FromIterator};
+use std::iter;
 use std::path::{Path, PathBuf};
 use std::str::{self, FromStr};
 
diff --git a/compiler/rustc_session/src/filesearch.rs b/compiler/rustc_session/src/filesearch.rs
index 1b66773be6f..1855a49c1ec 100644
--- a/compiler/rustc_session/src/filesearch.rs
+++ b/compiler/rustc_session/src/filesearch.rs
@@ -3,7 +3,6 @@
 use smallvec::{smallvec, SmallVec};
 use std::env;
 use std::fs;
-use std::iter::FromIterator;
 use std::path::{Path, PathBuf};
 
 use crate::search_paths::{PathKind, SearchPath};