fix: remove folder page helper card

android/app/src/main/java/com/hyzq/boss/ConversationFolderActivity.java

@@ -253,12 +253,6 @@ public class ConversationFolderActivity extends BossScreenActivity {
         folderDeviceId = folder.optString("deviceId", folderDeviceId == null ? "" : folderDeviceId).trim();
         int threadCount = folder.optInt("threadCount", 0);
         configureScreen(resolvedFolderName, threadCount + " 个线程");
-        appendContent(BossUi.buildSoftPanel(
-                this,
-                "项目内部线程页",
-                resolvedFolderName,
-                "点击线程后进入具体聊天窗口。"
-        ));
 
         JSONArray threads = folder.optJSONArray("threads");
         updateTrackedProjectIds(threads);