Reformat using the new identifier sorting from rustfmt

compiler/rustc_lint/src/tests.rs

@@ -1,4 +1,4 @@
-use rustc_span::{create_default_session_globals_then, Symbol};
+use rustc_span::{Symbol, create_default_session_globals_then};
 
 use crate::levels::parse_lint_and_tool_name;