update docs

Signed-off-by: Nshawn_he <shawn.he@huawei.com>

en/application-dev/reference/apis/js-apis-contact.md

@@ -465,8 +465,6 @@ selectContact(callback: AsyncCallback<Array<Contact>>): void
 
 Selects a contact. This API uses an asynchronous callback to return the result.
 
-This API is defined but not implemented in OpenHarmony 3.1 Release. It will be available for use in OpenHarmony 3.1 MR.
-
 **Permission required**: ohos.permission.READ_CONTACTS
 
 **System capability**: SystemCapability.Applications.Contacts and SystemCapability.Applications.ContactsData
@@ -495,8 +493,6 @@ selectContact(): Promise<Array<Contact>>
 
 Selects a contact. This API uses a promise to return the result.
 
-This API is defined but not implemented in OpenHarmony 3.1 Release. It will be available for use in OpenHarmony 3.1 MR.
-
 **Permission required**: ohos.permission.READ_CONTACTS
 
 **System capability**: SystemCapability.Applications.Contacts and SystemCapability.Applications.ContactsData

en/application-dev/reference/apis/js-apis-webSocket.md

@@ -3,7 +3,6 @@
 >![](public_sys-resources/icon-note.gif) **NOTE:**
 >The initial APIs of this module are supported since API version 6. Newly added APIs will be marked with a superscript to indicate their earliest API version.
 >
->Newly added APIs are defined but not implemented in OpenHarmony 3.1 Release. They will be available for use in OpenHarmony 3.1 MR.
 
 You can use WebSocket to establish a bidirectional connection between a server and a client. Before doing this, you need to use the [createWebSocket](#websocketcreatewebsocket) API to create a [WebSocket](#websocket) object and then use the [connect](#connect) API to connect to the server. If the connection is successful, the client will receive a callback of the [open](#onopen) event. Then, the client can communicate with the server using the [send](#send) API. When the server sends a message to the client, the client will receive a callback of the [message](#onmessage) event. If the client no longer needs this connection, it can call the [close](#close) API to disconnect from the server. Then, the client will receive a callback of the [close](#onclose) event.