Remove dead type

Author: trueadm

packages/react-dom/src/client/focus/ReactTabFocus.js

@@ -33,14 +33,6 @@ type KeyboardEvent = {|
   defaultPrevented: boolean,
 |};
 
-type ControllerHandle = {|
-  focusFirst: () => void,
-  focusNext: () => boolean,
-  focusPrevious: () => boolean,
-  getNextController: () => null | ControllerHandle,
-  getPreviousController: () => null | ControllerHandle,
-|};
-
 const {useRef} = React;
 
 function getTabbableNodes(scope: ReactScopeMethods) {