remove expand & center extension

lib/extension/text_style_extension.dart

@@ -11,8 +11,8 @@ extension TextStyleExtension on TextStyle {
 
   ///color
   TextStyle colorX(Color color) => this.copyWith(color: color);
-  //specific values
 
+  //specific values
   TextStyle get white => this.copyWith(color: kLightTextColor);
 
   TextStyle get black => this.copyWith(color: kTextColor);

lib/extension/widget_extension.dart

@@ -1,8 +1,6 @@
 import 'package:flutter/material.dart';
 
 extension WidgetExt on Widget {
-  Widget get expanded => Expanded(child: this);
-  Widget get center => Center(child: this);
   Widget paddingExt(double horizontal, [double vertical = 0]) => Padding(
         padding: EdgeInsets.symmetric(
           horizontal: horizontal,

lib/list_tile/as_card_expandable.dart

@@ -51,7 +51,7 @@ class ASCardExpandable extends StatefulWidget {
           child: title.text.black.size(14.sp).make(),
         ),
         DefaultTextStyle(style: TextStyle().black65.size(14), child: child)
-            .expanded,
+            .expand(),
         suffix ?? SizedBox(),
         10.wb,
       ],

lib/pickers/as_two_date_picker.dart

@@ -1,7 +1,6 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_screenutil/flutter_screenutil.dart';
 import 'package:ansu_ui/styles/as_colors.dart';
-import 'package:ansu_ui/extension/widget_extension.dart';
 import 'package:ansu_ui/extension/num_extension.dart';
 import 'package:ansu_ui/extension/text_style_extension.dart';
 import 'package:ansu_ui/pickers/as_date_range_picker_part.dart';
@@ -205,7 +204,7 @@ class _AS2DatePickerState extends State<AS2DatePicker> {
                   ),
                 ),
               ],
-            ).expanded,
+            ).expand(),
             Container(
               margin: EdgeInsets.symmetric(
                 horizontal: 24.w,