refactor: Remove 'unused' warnings

lib/logic/cubit/forms/setup/initializing/dns_provider_form_cubit.dart

@@ -7,16 +7,11 @@ import 'package:selfprivacy/logic/cubit/forms/validations/validations.dart';
 
 class DnsProviderFormCubit extends FormCubit {
   DnsProviderFormCubit(this.initializingCubit) {
-    //final RegExp regExp = initializingCubit.getDnsProviderApiTokenValidation();
     apiKey = FieldCubit(
       initalValue: '',
       validations: [
         RequiredStringValidation('validations.required'.tr()),
-        /*ValidationModel<String>(
-          regExp.hasMatch,
-          'validations.invalid_format'.tr(),
-        ),*/
-        //LengthStringNotEqualValidation(40)
+        LengthStringNotEqualValidation(40)
       ],
     );
 

lib/ui/pages/setup/initializing/initializing.dart

@@ -181,10 +181,7 @@ class InitializingPage extends StatelessWidget {
       BlocProvider(
         create: (final context) => DnsProviderFormCubit(initializingCubit),
         child: Builder(
-          builder: (final context) {
-            final formCubitState = context.watch<DnsProviderFormCubit>().state;
-
-            return Column(
+          builder: (final context) => Column(
             crossAxisAlignment: CrossAxisAlignment.start,
             children: [
               Image.asset(
@@ -221,8 +218,7 @@ class InitializingPage extends StatelessWidget {
                 title: 'initializing.how'.tr(),
               ),
             ],
-            );
-          },
+          ),
         ),
       );