chore: remove FoR feature flag (#5985)

remove feature flag

src/components/FeatureFlagModal/FeatureFlagModal.tsx

 import { BaseVariant, FeatureFlag, featureFlagSettings, useUpdateFlag } from 'featureFlags'
-import { useFiatOnrampFlag } from 'featureFlags/flags/fiatOnramp'
 import { GqlRoutingVariant, useGqlRoutingFlag } from 'featureFlags/flags/gqlRouting'
 import { NftListV2Variant, useNftListV2Flag } from 'featureFlags/flags/nftListV2'
 import { PayWithAnyTokenVariant, usePayWithAnyTokenFlag } from 'featureFlags/flags/payWithAnyToken'
@@ -213,12 +212,6 @@ export default function FeatureFlagModal() {
         featureFlag={FeatureFlag.permit2}
         label="Permit 2 / Universal Router"
       />
-      <FeatureFlagOption
-        variant={BaseVariant}
-        value={useFiatOnrampFlag()}
-        featureFlag={FeatureFlag.fiatOnramp}
-        label="Fiat on-ramp"
-      />
       <FeatureFlagOption
         variant={NftListV2Variant}
         value={useNftListV2Flag()}

src/components/FiatOnrampAnnouncement/index.tsx

@@ -3,8 +3,6 @@ import { sendAnalyticsEvent } from '@uniswap/analytics'
 import { InterfaceEventName } from '@uniswap/analytics-events'
 import { useWeb3React } from '@web3-react/core'
 import fiatMaskUrl from 'assets/svg/fiat_mask.svg'
-import { BaseVariant } from 'featureFlags'
-import { useFiatOnrampFlag } from 'featureFlags/flags/fiatOnramp'
 import { useCallback, useEffect, useState } from 'react'
 import { X } from 'react-feather'
 import { useToggleWalletDropdown } from 'state/application/hooks'
@@ -120,13 +118,11 @@ export function FiatOnrampAnnouncement() {
     acknowledge({ user: true })
   }, [acknowledge, toggleWalletDropdown])
 
-  const fiatOnrampFlag = useFiatOnrampFlag()
   const openModal = useAppSelector((state) => state.application.openModal)
 
   if (
     !account ||
     acks?.user ||
-    fiatOnrampFlag === BaseVariant.Control ||
     localStorage.getItem(ANNOUNCEMENT_DISMISSED) ||
     acks?.renderCount >= MAX_RENDER_COUNT ||
     isMobile ||

src/components/TopLevelModals/index.tsx

@@ -2,8 +2,6 @@ import { useWeb3React } from '@web3-react/core'
 import AddressClaimModal from 'components/claim/AddressClaimModal'
 import ConnectedAccountBlocked from 'components/ConnectedAccountBlocked'
 import FiatOnrampModal from 'components/FiatOnrampModal'
-import { BaseVariant } from 'featureFlags'
-import { useFiatOnrampFlag } from 'featureFlags/flags/fiatOnramp'
 import useAccountRiskCheck from 'hooks/useAccountRiskCheck'
 import { lazy } from 'react'
 import { useModalIsOpen, useToggleModal } from 'state/application/hooks'
@@ -20,7 +18,6 @@ export default function TopLevelModals() {
   const { account } = useWeb3React()
   useAccountRiskCheck(account)
   const accountBlocked = Boolean(blockedAccountModalOpen && account)
-  const fiatOnrampFlagEnabled = useFiatOnrampFlag() === BaseVariant.Enabled
 
   return (
     <>
@@ -29,7 +26,7 @@ export default function TopLevelModals() {
       <Bag />
       <TransactionCompleteModal />
       <AirdropModal />
-      {fiatOnrampFlagEnabled && <FiatOnrampModal />}
+      <FiatOnrampModal />
     </>
   )
 }

src/components/WalletDropdown/AuthenticatedHeader.tsx

@@ -9,8 +9,6 @@ import Tooltip from 'components/Tooltip'
 import { getConnection } from 'connection/utils'
 import { getChainInfoOrDefault } from 'constants/chainInfo'
 import { SupportedChainId } from 'constants/chains'
-import { BaseVariant } from 'featureFlags'
-import { useFiatOnrampFlag } from 'featureFlags/flags/fiatOnramp'
 import useCopyClipboard from 'hooks/useCopyClipboard'
 import useStablecoinPrice from 'hooks/useStablecoinPrice'
 import useNativeCurrency from 'lib/hooks/useNativeCurrency'
@@ -225,7 +223,6 @@ const AuthenticatedHeader = () => {
     closeModal()
   }, [clearCollectionFilters, closeModal, navigate, resetSellAssets, setSellPageState])
 
-  const fiatOnrampFlag = useFiatOnrampFlag()
   // animate the border of the buy crypto button when a user navigates here from the feature announcement
   // can be removed when components/FiatOnrampAnnouncment.tsx is no longer used
   const [acknowledgements, acknowledge] = useFiatOnrampAck()
@@ -316,8 +313,6 @@ const AuthenticatedHeader = () => {
         >
           <Trans>View and sell NFTs</Trans>
         </ProfileButton>
-        {fiatOnrampFlag === BaseVariant.Enabled && (
-          <>
         <BuyCryptoButton
           $animateBorder={animateBuyCryptoButtonBorder}
           size={ButtonSize.medium}
@@ -356,8 +351,6 @@ const AuthenticatedHeader = () => {
             </Tooltip>
           </FiatOnrampNotAvailableText>
         )}
-          </>
-        )}
         {isUnclaimed && (
           <UNIButton onClick={openClaimModal} size={ButtonSize.medium} emphasis={ButtonEmphasis.medium}>
             <Trans>Claim</Trans> {unclaimedAmount?.toFixed(0, { groupSeparator: ',' } ?? '-')} <Trans>reward</Trans>

src/featureFlags/flags/featureFlags.ts

 export enum FeatureFlag {
-  fiatOnramp = 'fiatOnramp',
   traceJsonRpc = 'traceJsonRpc',
   permit2 = 'permit2',
   nftListV2 = 'nftListV2',

src/featureFlags/flags/fiatOnramp.ts

-import { BaseVariant } from '../index'
-
-export function useFiatOnrampFlag(): BaseVariant {
-  return BaseVariant.Enabled
-  // return useBaseFlag(FeatureFlag.fiatOnramp)
-}