Remove IAP code and usage

Modules/Sources/Networking/Model/Site.swift

@@ -240,12 +240,6 @@ public extension Site {
     var isSimpleSite: Bool {
         plan == WooConstants.freePlanSlug
     }
-
-    /// Whether the site is running a free trial WooExpress plan
-    ///
-    var isFreeTrialSite: Bool {
-        plan == WooConstants.freeTrialPlanSlug
-    }
 }
 
 /// Defines all of the Site CodingKeys.

Modules/Sources/Networking/Remote/FeatureFlagRemote.swift

@@ -28,15 +28,12 @@ public class FeatureFlagRemote: Remote, FeatureFlagRemoteProtocol {
 
 public enum RemoteFeatureFlag: Decodable {
     case storeCreationCompleteNotification
-    case hardcodedPlanUpgradeDetailsMilestone1AreAccurate
     case pointOfSale
 
     init?(rawValue: String) {
         switch rawValue {
         case "woo_notification_store_creation_ready":
             self = .storeCreationCompleteNotification
-        case "woo_hardcoded_plan_upgrade_details_milestone_1_are_accurate":
-            self = .hardcodedPlanUpgradeDetailsMilestone1AreAccurate
         case "woo_pos":
             self = .pointOfSale
         default:

Modules/Sources/Networking/Remote/PaymentRemote.swift

@@ -28,6 +28,7 @@ public protocol PaymentRemoteProtocol {
 
 /// WPCOM Payment Endpoints
 ///
+// periphery:ignore
 public class PaymentRemote: Remote, PaymentRemoteProtocol {
     public func loadPlan(thatMatchesID productID: Int64) async throws -> WPComPlan {
         let path = Path.products
@@ -103,6 +104,7 @@ public struct WPComPlan: Decodable, Equatable {
 }
 
 /// Contains necessary data for a site's WPCOM plan.
+// periphery:ignore
 public struct WPComSitePlan: Equatable {
     /// ID of the WPCOM plan.
     ///

Modules/Sources/NetworkingCore/Settings/WooConstants.swift

@@ -13,6 +13,4 @@ public enum WooConstants {
     /// Slug of the free plan
     public static let freePlanSlug = "free_plan"
 
-    /// Slug of the free trial WooExpress plan
-    public static let freeTrialPlanSlug = "ecommerce-trial-bundle-monthly"
 }