!18220 【轻量级 PR】：应用模型侧删除DatashareExtension

Merge pull request !18220 from Ling/N/A

zh-cn/application-dev/application-models/Readme-CN.md

@@ -17,7 +17,6 @@
     - ExtensionAbility组件
       - [ExtensionAbility组件概述](extensionability-overview.md)
       - [ServiceExtensionAbility](serviceextensionability.md)
-      - [DataShareExtensionAbility（仅对系统应用开放）](datashareextensionability.md)
       - [AccessibilityExtensionAbility](accessibilityextensionability.md)
       - [EnterpriseAdminExtensionAbility](enterprise-extensionAbility.md)
       - [InputMethodExtensionAbility](inputmethodextentionability.md)