let_chains are stable now

src/bin/edit/main.rs

@@ -1,7 +1,7 @@
 // Copyright (c) Microsoft Corporation.
 // Licensed under the MIT License.
 
-#![feature(allocator_api, let_chains, linked_list_cursors, string_from_utf8_lossy_owned)]
+#![feature(allocator_api, linked_list_cursors, string_from_utf8_lossy_owned)]
 
 mod documents;
 mod draw_editor;

src/lib.rs

@@ -5,7 +5,6 @@
     allocator_api,
     breakpoint,
     cold_path,
-    let_chains,
     linked_list_cursors,
     maybe_uninit_fill,
     maybe_uninit_slice,