Remove UserDiscoverySetAlternative functor

Sources/ElixxirDAppsSDK/UserDiscovery/Functors/UserDiscoverySetAlternative.swift

-import Bindings
-import XCTestDynamicOverlay
-
-public struct UserDiscoverySetAlternative {
-  public var run: (UserDiscoveryConfig?) throws -> Void
-
-  public func callAsFunction(_ config: UserDiscoveryConfig?) throws {
-    try run(config)
-  }
-}
-
-extension UserDiscoverySetAlternative {
-  public static func live(_ bindingsUD: BindingsUserDiscovery) -> UserDiscoverySetAlternative {
-    UserDiscoverySetAlternative { config in
-      if let config = config {
-        try bindingsUD.setAlternative(
-          config.cert,
-          altAddress: config.address,
-          contactFile: config.contact
-        )
-      } else {
-        try bindingsUD.unsetAlternativeUserDiscovery()
-      }
-    }
-  }
-}
-
-extension UserDiscoverySetAlternative {
-  public static let unimplemented = UserDiscoverySetAlternative(
-    run: XCTUnimplemented("\(Self.self)")
-  )
-}
-

Sources/ElixxirDAppsSDK/UserDiscovery/UserDiscovery.swift

 import Bindings
 
 public struct UserDiscovery {
-  public var setAlternative: UserDiscoverySetAlternative
   public var getId: UserDiscoveryGetId
   public var getContact: UserDiscoveryGetContact
   public var getFacts: UserDiscoveryGetFacts
@@ -14,7 +13,6 @@ public struct UserDiscovery {
 extension UserDiscovery {
   public static func live(_ bindingsUD: BindingsUserDiscovery) -> UserDiscovery {
     UserDiscovery(
-      setAlternative: .live(bindingsUD),
       getId: .live(bindingsUD),
       getContact: .live(bindingsUD),
       getFacts: .live(bindingsUD),
@@ -28,7 +26,6 @@ extension UserDiscovery {
 
 extension UserDiscovery {
   public static let unimplemented = UserDiscovery(
-    setAlternative: .unimplemented,
     getId: .unimplemented,
     getContact: .unimplemented,
     getFacts: .unimplemented,