[new]去除部分冗余代码

lib/module/main/main_controller.dart

@@ -80,8 +80,6 @@ class MainController extends BaseController {
 
   GoodsBean? get lastSelectedGoods => memberRepository.lastSelectedGoods.value;
 
-  final SheetController sheetController = SheetController();
-
   final FriendsRepository friendsRepository;
   final AccountRepository accountRepository;
   final MessageRepository messageRepository;

lib/module/main/main_page.dart

@@ -81,7 +81,6 @@ class MainPage extends BasePage<MainController> {
 
   Widget buildMainBottomView() {
     return SlidingSheet(
-      controller: controller.sheetController,
       color: ColorName.transparent,
       snapSpec: SnapSpec(
         initialSnap: SnapSpec.headerSnap,