fix: Toggle shortcut for TOC not working

app/scenes/Document/components/Document.tsx

@@ -264,20 +264,6 @@ class DocumentScene extends React.Component<Props> {
     }
   };
 
-  onToggleTableOfContents = (ev: KeyboardEvent) => {
-    if (!this.props.readOnly) {
-      return;
-    }
-    ev.preventDefault();
-    const { ui } = this.props;
-
-    if (ui.tocVisible) {
-      ui.hideTableOfContents();
-    } else {
-      ui.showTableOfContents();
-    }
-  };
-
   onSave = async (
     options: {
       done?: boolean;
@@ -433,14 +419,6 @@ class DocumentScene extends React.Component<Props> {
             }
           }}
         />
-        <RegisterKeyDown
-          trigger="h"
-          handler={(event) => {
-            if (event.ctrlKey && event.altKey) {
-              this.onToggleTableOfContents(event);
-            }
-          }}
-        />
         <Background
           id="full-width-container"
           key={revision ? revision.id : document.id}