removed intent_ref from frontend

frontend/pshared/lib/api/requests/payment/initiate_payments.dart

@@ -1,40 +1,20 @@
+import 'package:json_annotation/json_annotation.dart';
 import 'package:pshared/api/requests/payment/base.dart';
 
+part 'initiate_payments.g.dart';
+
+
+@JsonSerializable()
 class InitiatePaymentsRequest extends PaymentBaseRequest {
   final String quoteRef;
-  final String? intentRef;
-  final List<String>? intentRefs;
 
   const InitiatePaymentsRequest({
     required super.idempotencyKey,
     super.metadata,
     required this.quoteRef,
-    this.intentRef,
-    this.intentRefs,
   });
 
-  factory InitiatePaymentsRequest.fromJson(Map<String, dynamic> json) {
-    return InitiatePaymentsRequest(
-      idempotencyKey: json['idempotencyKey'] as String,
-      metadata: (json['metadata'] as Map<String, dynamic>?)?.map(
-        (key, value) => MapEntry(key, value as String),
-      ),
-      quoteRef: json['quoteRef'] as String,
-      intentRef: json['intentRef'] as String?,
-      intentRefs: (json['intentRefs'] as List<dynamic>?)
-          ?.map((value) => value as String)
-          .toList(),
-    );
-  }
-
+  factory InitiatePaymentsRequest.fromJson(Map<String, dynamic> json) => _$InitiatePaymentsRequestFromJson(json);
   @override
-  Map<String, dynamic> toJson() {
-    return <String, dynamic>{
-      'idempotencyKey': idempotencyKey,
-      'metadata': metadata,
-      'quoteRef': quoteRef,
-      if (intentRef != null) 'intentRef': intentRef,
-      if (intentRefs != null) 'intentRefs': intentRefs,
-    };
-  }
+  Map<String, dynamic> toJson() => _$InitiatePaymentsRequestToJson(this);
 }

frontend/pshared/lib/provider/payment/multiple/provider.dart

@@ -30,8 +30,6 @@ class MultiPaymentProvider extends ChangeNotifier {
   Future<List<Payment>> pay({
     String? idempotencyKey,
     Map<String, String>? metadata,
-    String? intentRef,
-    List<String>? intentRefs,
   }) async {
     if (!_organization.isOrganizationSet) {
       throw StateError('Organization is not set');
@@ -54,8 +52,6 @@ class MultiPaymentProvider extends ChangeNotifier {
         quoteRef,
         idempotencyKey: idempotencyKey,
         metadata: metadata,
-        intentRef: intentRef,
-        intentRefs: intentRefs,
       );
 
       _setResource(

frontend/pshared/lib/service/payment/multiple.dart

@@ -37,8 +37,6 @@ class MultiplePaymentsService {
     String quoteRef, {
     String? idempotencyKey,
     Map<String, String>? metadata,
-    String? intentRef,
-    List<String>? intentRefs,
   }) async {
     _logger.fine(
       'Executing multiple payments for quote $quoteRef in $organizationRef',
@@ -47,8 +45,6 @@ class MultiplePaymentsService {
       idempotencyKey: idempotencyKey ?? const Uuid().v4(),
       quoteRef: quoteRef,
       metadata: metadata,
-      intentRef: intentRef,
-      intentRefs: intentRefs,
     );
 
     final response = await AuthorizationService.getPOSTResponse(