Clean up onboarding flag (#2636)

Author: ifosli

Library/RemoteConfig/RemoteConfigFeature+Helpers.swift

@@ -23,10 +23,6 @@ public func featureUseKeychainForOAuthTokenEnabled() -> Bool {
   featureEnabled(feature: .useKeychainForOAuthToken)
 }
 
-public func featureOnboardingFlowEnabled() -> Bool {
-  featureEnabled(feature: .onboardingFlow)
-}
-
 public func featurePledgedProjectsOverviewV2Enabled() -> Bool {
   featureEnabled(feature: .pledgedProjectsOverviewV2Enabled)
 }

Library/RemoteConfig/RemoteConfigFeature.swift

@@ -3,7 +3,6 @@ import Foundation
 public enum RemoteConfigFeature: String, CaseIterable {
   case editPledgeOverTimeEnabled = "edit_pledge_over_time"
   case useKeychainForOAuthToken = "use_keychain_for_oauth_token"
-  case onboardingFlow = "onboarding_flow"
   case pledgedProjectsOverviewV2Enabled = "pledged_projects_overview_v2"
   case pledgeOverTime = "pledge_over_time"
   case rewardShipmentTracking = "reward_shipment_tracking"
@@ -15,7 +14,6 @@ extension RemoteConfigFeature: CustomStringConvertible {
     switch self {
     case .editPledgeOverTimeEnabled: return "Edit Pledge Over Time"
     case .useKeychainForOAuthToken: return "Use Keychain for OAuth token"
-    case .onboardingFlow: return "Onboarding Flow"
     case .pledgedProjectsOverviewV2Enabled: return "Pledged Projects Overview V2"
     case .pledgeOverTime: return "Pledge Over Time"
     case .rewardShipmentTracking: return "Reward Shipment Tracking"