Description: remove unused directory

IssueNo:  https://gitee.com/openharmony/graphic_ui/issues/I5XANE
Feature or Bugfix: Feature
Binary Source:No
Signed-off-by: Nlizhiqi <lizhiqi1@huawei.com>

README.md

@@ -36,10 +36,6 @@ The graphics UI directly calls the HAL API or uses the client provided by the Wi
 │   │   └── ohos                # OHOS platform adaptation
 │   ├── draw                    # Drawing logic
 │   ├── engines                 # Drawing engines
-│   │   ├── dfb
-│   │   ├── general
-│   │   ├── gpu_vglite
-│   │   └── software_zlite
 │   ├── events                  # Events
 │   ├── font                    # Fonts
 │   ├── imgdecode               # Image management

README_zh.md

@@ -36,10 +36,6 @@
 │   │   └── ohos                # ohos平台适配
 │   ├── draw                    # 绘制逻辑
 │   ├── engines                 # 绘制引擎
-│   │   ├── dfb
-│   │   ├── general
-│   │   ├── gpu_vglite
-│   │   └── software_zlite
 │   ├── events                  # 事件
 │   ├── font                    # 字体
 │   ├── imgdecode               # 图片管理