Reformat use declarations.

The previous commit updated `rustfmt.toml` appropriately. This commit is
the outcome of running `x fmt --all` with the new formatting options.

compiler/rustc_parse/src/lib.rs

@@ -12,18 +12,17 @@
 #![feature(let_chains)]
 // tidy-alphabetical-end
 
+use std::path::Path;
+
 use rustc_ast as ast;
-use rustc_ast::token;
 use rustc_ast::tokenstream::TokenStream;
-use rustc_ast::{AttrItem, Attribute, MetaItem};
+use rustc_ast::{token, AttrItem, Attribute, MetaItem};
 use rustc_ast_pretty::pprust;
 use rustc_data_structures::sync::Lrc;
 use rustc_errors::{Diag, FatalError, PResult};
 use rustc_session::parse::ParseSess;
 use rustc_span::{FileName, SourceFile, Span};
 
-use std::path::Path;
-
 pub const MACRO_ARGUMENTS: Option<&str> = Some("macro arguments");
 
 #[macro_use]