Code cleanup

lib/src/widgets/raw_editor/raw_editor_state_text_input_client_mixin.dart

@@ -283,8 +283,8 @@ mixin RawEditorStateTextInputClientMixin on EditorState
 
   @override
   void showAutocorrectionPromptRect(int start, int end) {
-    // this is called VERY OFTEN when editing a document, no longer throw an exception
+    // this is called VERY OFTEN when editing a document, no longer throw
-    // throw UnimplementedError();
+    // an exception
   }
 
   @override