chore: remove unused code

apps/cowswap-frontend/src/legacy/components/Header/URLWarning/index.tsx

@@ -1,5 +1,4 @@
-import { useFetchFile } from '@cowprotocol/common-hooks'
-import { environmentName, hashCode, isInjectedWidget } from '@cowprotocol/common-utils'
+import { hashCode, isInjectedWidget } from '@cowprotocol/common-utils'
 import { SupportedChainId as ChainId } from '@cowprotocol/cow-sdk'
 import { ClosableBanner } from '@cowprotocol/ui'
 import { useWalletInfo } from '@cowprotocol/wallet'
@@ -11,16 +10,9 @@ import { GlobalWarning } from 'common/pure/GlobalWarning'
 
 import { markdownComponents } from '../../Markdown/components'
 
-// Announcement content: Modify this repository to edit the announcement
-const ANNOUNCEMENTS_MARKDOWN_BASE_URL = 'https://raw.githubusercontent.com/cowprotocol/cowswap-banner/main' //
 
 const BANNER_STORAGE_KEY = 'announcementBannerClosed/'
 
-const PRODUCTION_ENVS: (typeof environmentName)[] = ['production', 'staging', 'ens']
-
-function getAnnouncementUrl(chainId: number, env?: 'production' | 'barn') {
-  return `${ANNOUNCEMENTS_MARKDOWN_BASE_URL}${env ? `/${env}` : ''}/announcements-${chainId}.md`
-}
 
 function useGetCmsAnnouncement(chainId: number): string | undefined {
   const critical = useCriticalAnnouncements(chainId)
@@ -40,30 +32,6 @@ function useGetCmsAnnouncement(chainId: number): string | undefined {
   return
 }
 
-// TODO: should it be kept as a fallback?
-function useGetAnnouncement(chainId: number): string | undefined {
-  const env = PRODUCTION_ENVS.includes(environmentName) ? 'production' : 'barn'
-
-  // Fetches global announcement
-  const { file, error } = useFetchFile(getAnnouncementUrl(chainId))
-  // Fetches env announcement
-  const { file: envFile, error: envError } = useFetchFile(getAnnouncementUrl(chainId, env))
-
-  const announcementText = error ? undefined : file?.trim()
-
-  if (error) {
-    console.error('[URLWarning] Error getting the announcement text: ', error)
-  }
-
-  const envAnnouncementText = envError ? undefined : envFile?.trim()
-
-  if (envError) {
-    console.error(`[URLWarning] Error getting the env ${env} announcement text: `, envError)
-  }
-
-  return announcementText || envAnnouncementText
-}
-
 export function URLWarning() {
   const { chainId = ChainId.MAINNET } = useWalletInfo()