refactor: remove duplicated imports in XBlockContainerIframe component

Author: bra-i-am

src/course-unit/xblock-container-iframe/index.tsx

@@ -39,12 +39,6 @@ import {
   AccessManagedXBlockDataTypes,
 } from './types';
 import { formatAccessManagedXBlockData, getIframeUrl, getLegacyEditModalUrl } from './utils';
-import messages from './messages';
-import { useIframeBehavior } from '../../generic/hooks/useIframeBehavior';
-import { useIframeContent } from '../../generic/hooks/useIframeContent';
-import { useIframeMessages } from '../../generic/hooks/useIframeMessages';
-import VideoSelectorPage from '../../editors/VideoSelectorPage';
-import EditorPage from '../../editors/EditorPage';
 
 const XBlockContainerIframe: FC<XBlockContainerIframeProps> = ({
   courseId,