[NTP] Remove TODO comments for closed issues (#35019)

browser/resources/brave_new_tab_page_refresh/components/background/rich_media_capabilities.ts

@@ -26,8 +26,6 @@ interface SafeRectMessage {
 
 interface SearchMatchesMessage {
   type: 'richMediaSearchMatches'
-  // TODO(https://github.com/brave/brave-browser/issues/50424): This should be
-  // a type defined by the protocol.
   value: AutocompleteMatch[]
 }
 

browser/resources/brave_new_tab_page_refresh/components/top_sites/top_sites.tsx

@@ -28,8 +28,6 @@ export function TopSites() {
   const listKind = useTopSitesState((s) => s.topSitesListKind)
   const topSites = useTopSitesState((s) => s.topSites)
 
-  // TODO(https://github.com/brave/brave-browser/issues/45697): Use a pref to
-  // persist the expanded state.
   const [expanded, setExpanded] = usePersistedJSON(
     'ntp-top-sites-expanded',
     Boolean,