Merge pull request #1270 from AgoraIO/1594-bug-user-management-deleti…

…ng-a-user

Fix delete user endpoint

shared/chat-sdk/restful-api/_user-system-registration.mdx

@@ -477,20 +477,13 @@ For each App Key, the call frequency limit of this method is 100 per second.
 ### HTTP request
 
 ```html
-DELETE https://{host}/{org_name}/{app_name}/users?limit={N}&cursor={cursor}
+DELETE https://{host}/{org_name}/{app_name}/users/{username}
 ```
 
 #### Path parameter
 
 For the parameters and detailed descriptions, see [Common parameters](#param).
 
-#### Query parameter
-
-| Parameter | Type | Description | Required |
-| :------- | :----- | :------------------------ | :------- |
-| `limit` | Number | The number of users to delete. The value range is [1,100] with `10` as the default. | No |
-| `cursor` | String | The position where to start deleting users. <br/> No cursor is required for the first request. For each subsequent request, the cursor is obtained from the body of response to the previous request. If the cursor is no longer returned, all users are deleted. | No |
-
 #### Request header
 
 | Parameter | Type | Description | Required |