By tracking import use types to check whether it is scope uses or the other situations like module-relative uses, we can do more accurate redundant import checking.

fixes #117448

For example unnecessary imports in std::prelude that can be eliminated:

```rust
use std::option::Option::Some;//~ WARNING the item `Some` is imported redundantly
use std::option::Option::None; //~ WARNING the item `None` is imported redundantly
```

1 files changed, 1 insertions, 1 deletions

diff --git a/compiler/rustc_middle/src/mir/syntax.rs b/compiler/rustc_middle/src/mir/syntax.rs
index 40af453f6ce..5c9857b9c53 100644
--- a/compiler/rustc_middle/src/mir/syntax.rs
+++ b/compiler/rustc_middle/src/mir/syntax.rs
@@ -15,7 +15,7 @@ use crate::ty::{Region, UserTypeAnnotationIndex};
 use rustc_ast::{InlineAsmOptions, InlineAsmTemplatePiece};
 use rustc_data_structures::packed::Pu128;
 use rustc_hir::def_id::DefId;
-use rustc_hir::{self, CoroutineKind};
+use rustc_hir::CoroutineKind;
 use rustc_index::IndexVec;
 use rustc_span::source_map::Spanned;
 use rustc_target::abi::{FieldIdx, VariantIdx};