clean up

crates/editor/tests/diff_view.rs

@@ -226,12 +226,6 @@ fn rows_render_virtualized_and_the_view_jumps_to_the_first_change() {
     );
 }
 
-#[test]
-fn identical_versions_produce_no_rows() {
-    let rows = diff_rows(OLD, OLD, Language::Rust);
-    assert!(rows.is_empty(), "identical versions have no diff to show");
-}
-
 #[test]
 fn set_versions_re_diffs() {
     let mut cx = TestAppContext::single();