[MM-60851] Replace FormattedMarkdownMessage in 'webapp/channels/src/components/system_notice/notices.tsx' with FormattedMessage (#28632)

webapp/channels/src/components/system_notice/notices.tsx

@@ -7,7 +7,6 @@ import {FormattedMessage} from 'react-intl';
 import {InformationOutlineIcon} from '@mattermost/compass-icons/components';
 
 import ExternalLink from 'components/external_link';
-import FormattedMarkdownMessage from 'components/formatted_markdown_message';
 import type {Notice} from 'components/system_notice/types';
 
 import {DocLinks} from 'utils/constants';
@@ -146,7 +145,7 @@ const notices: Notice[] = [
     {
         name: 'ie11_deprecation',
         title: (
-            <FormattedMarkdownMessage
+            <FormattedMessage
                 id='system_notice.title'
                 defaultMessage='Notice from Mattermost'
             />