feat：移除原来 welcome栏

src/pages/ChatMain/ChatMainList/index.vue

@@ -36,11 +36,11 @@
       @scrolltolower="handleScrollToLower"
     >
       <!-- welcome栏 -->
-      <ChatTopWelcome ref="welcomeRef" :mainPageDataModel="mainPageDataModel" />
+      <!-- <ChatTopWelcome ref="welcomeRef" :mainPageDataModel="mainPageDataModel" />
       <NoticeMessage
         v-if="notitceConent"
         :noticeContent="notitceConent"
-      ></NoticeMessage>
+      ></NoticeMessage> -->
 
       <view
         class="area-msg-list-content"