Final bits of cleanup

Author: jeremywiebe

packages/perseus-editor/src/__stories__/editor-with-layout.stories.tsx

@@ -86,6 +86,10 @@ export const Controlled: Story = {
                             <Section title="JSON Mode Editor">
                                 {items.jsonModeEditor}
                             </Section>
+
+                            <Section title="Question Extras">
+                                {items.questionExtras}
+                            </Section>
                         </View>
 
                         <Section title="Item Editor">
@@ -102,10 +106,6 @@ export const Controlled: Story = {
                         <Section title="Hints Editor">
                             {items.hintsEditor}
                         </Section>
-
-                        <Section title="Question Extras">
-                            {items.questionExtras}
-                        </Section>
                     </View>
                 )}
             </EditorWithLayout>

packages/perseus-editor/src/editor-with-layout.tsx

@@ -6,7 +6,6 @@ import _ from "underscore";
 import DeviceFramer from "./components/device-framer";
 import JsonEditor from "./components/json-editor";
 import ViewportResizer from "./components/viewport-resizer";
-import ContentPreview from "./content-preview";
 import CombinedHintsEditor from "./hint-editor";
 import IframeContentRenderer from "./iframe-content-renderer";
 import ItemEditor from "./item-editor";
@@ -393,7 +392,6 @@ class EditorWithLayout extends React.Component<Props, State> {
                             ref={this.itemExtrasEditor}
                             onChange={(answerArea) =>
                                 this.handleChange({
-                                    // @ts-expect-error - TS2322 - Types of property 'calculator' are incompatible.
                                     answerArea: {
                                         ...this.props.answerArea,
                                         ...answerArea,