js/plugins/drupalentity/plugin.js                 | 3 ---
 src/Controller/PreviewController.php              | 2 +-
 tests/src/FunctionalJavascript/MediaImageTest.php | 2 --
 3 files changed, 1 insertion(+), 6 deletions(-)

diff --git a/js/plugins/drupalentity/plugin.js b/js/plugins/drupalentity/plugin.js
index a96d331..662c9ff 100644
--- a/js/plugins/drupalentity/plugin.js
+++ b/js/plugins/drupalentity/plugin.js
@@ -295,9 +295,6 @@
         /**
          * Loads an entity embed preview, calls a callback to insert.
          *
-         * @todo Since previews use the downcasted representation, and `downcast()` relies 100% on `this.data`, and
-         * `_hashData()` knows which changes are immaterial, we should be able to cache preview responses.
-         *
          * @param {function} callback
          *   A callback function that will be called after the preview has loaded, and receives the widget instance.
          */
diff --git a/src/Controller/PreviewController.php b/src/Controller/PreviewController.php
index 428c0d8..33102d9 100644
--- a/src/Controller/PreviewController.php
+++ b/src/Controller/PreviewController.php
@@ -78,7 +78,7 @@ class PreviewController implements ContainerInjectionInterface {
     // - \Drupal\Core\Cache\CacheableResponse because caching it on the server
     //   side is wasteful, hence there is no need for cacheability metadata.
     // - \Drupal\Core\Render\HtmlResponse because there is no need for
-    //    attachments nor cacheability metadata.
+    //   attachments nor cacheability metadata.
     return (new Response($html))
       // Do not allow any intermediary to cache the response, only the end user.
       ->setPrivate()
diff --git a/tests/src/FunctionalJavascript/MediaImageTest.php b/tests/src/FunctionalJavascript/MediaImageTest.php
index 3c30a21..037532f 100644
--- a/tests/src/FunctionalJavascript/MediaImageTest.php
+++ b/tests/src/FunctionalJavascript/MediaImageTest.php
@@ -764,8 +764,6 @@ class MediaImageTest extends EntityEmbedTestBase {
       return entry.initiatorType == 'xmlhttprequest' && entry.name.indexOf('/entity-embed/preview/') !== -1;
     })
     .pop()
-    // // .length;
-    // // .name;
     .transferSize;
 })()
 JS;