refactor(app): Dart fix applied

lib/localization/app_localization.dart

@@ -2,7 +2,6 @@ import 'ru/ru_translations.dart';
 //import 'en_us/en_us_translations.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/cupertino.dart';
-import '../core/app_export.dart';
 
 class AppLocalization {
   AppLocalization(this.locale);

lib/presentation/registration/date_of_birth_screen/date_of_birth_screen.dart

@@ -160,12 +160,10 @@ class _DateOfBirthScreenState extends State<DateOfBirthScreen> {
         DateTime.now().day,
       ),
     );
-    if (dateTime != null) {
-      if (mounted) {
-        setState(() {
-          selectedDate = dateTime;
-        });
-      }
+    if (mounted) {
+      setState(() {
+        selectedDate = dateTime;
+      });
+    }
     }
-  }
 }

lib/theme/bloc/theme_bloc.dart

@@ -1,6 +1,5 @@
 import 'package:equatable/equatable.dart';
 import 'package:flutter/material.dart';
-import '../../core/app_export.dart';
 part 'theme_event.dart';
 part 'theme_state.dart';
 

lib/theme/custom_text_style.dart

@@ -1,5 +1,4 @@
 import 'package:flutter/material.dart';
-import '../core/app_export.dart';
 
 /// A collection of pre-defined text styles for customizing text appearance,
 /// categorized by different font families and weights.