delete deprecated mark

Signed-off-by: Nliyufan <liyufan5@huawei.com>

zh-cn/application-dev/reference/apis/js-apis-system-network.md

 # @system.network (网络状态)
 
 > **说明：**
-> - 从API Version 7 开始，该接口不再维护，推荐使用新接口[`@ohos.telephony.observer`](js-apis-observer.md)。
->
 > - 本模块首批接口从API version 3开始支持。后续版本的新增接口，采用上角标单独标记接口的起始版本。
 
 
@@ -23,23 +21,14 @@ ohos.permission.GET_NETWORK_INFO
 
 ## network.getType<sup>3+</sup>
 
-getType(options?: {
-    /**
-     * Called when the network type is obtained.
-     * @since 3
-     */
-    success?: (data: NetworkResponse) => void;
-    /**
-     * Called when the network type fails to be obtained.
-     * @since 3
-     */
-    fail?: (data: any, code: number) => void;
-    /**
-     * Called when the execution is completed.
-     * @since 3
-     */
-    complete?: () => void;
-  }): void
+getType(options?: {<br>
+
+&nbsp;&nbsp;success?: (data: NetworkResponse) => void;<br>
+
+&nbsp;&nbsp;fail?: (data: any, code: number) => void;<br>
+
+&nbsp;&nbsp;complete?: () => void;<br>
+}): void<br>
 
 获取当前设备的网络类型。
 
@@ -79,18 +68,12 @@ export default {
 
 ## network.subscribe<sup>3+</sup>
 
-subscribe(options?:{
-    /**
-     * Called when the network connection state changes.
-     * @since 3
-     */
-    success?: (data: NetworkResponse) => void;
-    /**
-     * Called when the listening fails.
-     * @since 3
-     */
-    fail?: (data: any, code: number) => void;
-  }): void
+subscribe(options?:{<br>
+
+&nbsp;&nbsp;success?: (data: NetworkResponse) => void;<br>
+
+&nbsp;&nbsp;fail?: (data: any, code: number) => void;<br>
+  }): void<br>
 
 订阅当前设备的网络连接状态。如果多次调用，会覆盖前一次调用。