fix unused import

Author: oksbsb

compiler/rustc_interface/src/interface.rs

@@ -3,10 +3,10 @@ use crate::util;
 use rustc_ast::token;
 use rustc_ast::{LitKind, MetaItemKind};
 use rustc_codegen_ssa::traits::CodegenBackend;
+use rustc_data_structures::defer;
 use rustc_data_structures::fx::{FxHashMap, FxHashSet};
 use rustc_data_structures::stable_hasher::StableHasher;
 use rustc_data_structures::sync::Lrc;
-use rustc_data_structures::{defer, jobserver};
 use rustc_errors::registry::Registry;
 use rustc_errors::{ErrorGuaranteed, Handler};
 use rustc_lint::LintStore;