!11772 deleted mediaLibrary.d.ts redundant instructions

Merge pull request !11772 from 胡伟奇/modify_medialibrary_md

zh-cn/application-dev/reference/apis/js-apis-medialibrary.md

@@ -45,6 +45,7 @@ import featureAbility from '@ohos.ability.featureAbility';
 let context = featureAbility.getContext();
 let media = mediaLibrary.getMediaLibrary(context);
 ```
+
 ## mediaLibrary.getMediaLibrary
 
 getMediaLibrary(): MediaLibrary
@@ -53,8 +54,6 @@ getMediaLibrary(): MediaLibrary
 
 此接口仅可在FA模型下使用。
 
-> **说明**： 从API Version 8开始，该接口不再维护，推荐使用新接口[mediaLibrary.getMediaLibrary<sup>8+</sup>](#medialibrarygetmedialibrary8)。
-
 **系统能力**：SystemCapability.Multimedia.MediaLibrary.Core
 
 **返回值：**