Merge branch '133-remove-legacy-plans' into 'release/2.1.0'

Resolve "Remove legacy plans"

See merge request ios/client-library-apple!189

PIALibrary/Sources/Core/WebServices/Plan.swift

@@ -17,18 +17,6 @@ public enum Plan: String {
     /// Subscription expires/renews after one year.
     case yearly
     
-    /// Plan expires/renews after one month (price inApp 2019).
-    case legacyMonthly
-    
-    /// Plan expires/renews after one year (price inApp 2019).
-    case legacyYearly
-    
-    /// Plan expires/renews after one month (price before 2019).
-    case oldLegacyMonthly
-    
-    /// Plan expires/renews after one year (price before 2019).
-    case oldLegacyYearly
-
     /// It's a trial plan.
     case trial
 

PIALibrary/Sources/Library/Account/DefaultAccountProvider.swift

@@ -472,14 +472,6 @@ class DefaultAccountProvider: AccountProvider, ConfigurationAccess, DatabaseAcce
                 callback?([.monthly], nil)
             case .yearly:
                 callback?([.yearly], nil)
-            case .legacyMonthly:
-                callback?([.legacyMonthly], nil)
-            case .legacyYearly:
-                callback?([.legacyYearly], nil)
-            case .oldLegacyMonthly:
-                callback?([.oldLegacyMonthly], nil)
-            case .oldLegacyYearly:
-                callback?([.oldLegacyYearly], nil)
             case .other:
                 callback?(nil, ClientError.renewingNonRenewable)
             }