feat: remove OpenAI-Beta header

Author: WqyJh

client.go

@@ -71,7 +71,6 @@ func (c *Client) getHeaders() http.Header {
 		headers.Set("api-key", c.config.authToken)
 	} else {
 		headers.Set("Authorization", "Bearer "+c.config.authToken)
-		headers.Set("OpenAI-Beta", "realtime=v1")
 	}
 	return headers
 }

client_test.go

@@ -21,7 +21,6 @@ func TestClient(t *testing.T) {
 	require.Equal(t, OpenaiRealtimeAPIURLv1+"?model=test-model", url)
 	headers := client.getHeaders()
 	require.Equal(t, "Bearer "+mockToken, headers.Get("Authorization"))
-	require.Equal(t, "realtime=v1", headers.Get("OpenAI-Beta"))
 
 	azureURL := "wss://my-eastus2-openai-resource.openai.azure.com/openai/realtime"
 	config = DefaultAzureConfig(mockToken, azureURL)

conn_test.go

@@ -56,7 +56,6 @@ func TestConnect(t *testing.T) {
 		dialFunc: func(_ context.Context, url string, header http.Header) (openairt.WebSocketConn, error) {
 			require.Equal(t, openairt.OpenaiRealtimeAPIURLv1+"?model="+model, url)
 			require.Equal(t, "Bearer "+token, header.Get("Authorization"))
-			require.Equal(t, "realtime=v1", header.Get("OpenAI-Beta"))
 			dialCalled = true
 			return &mockWebSocketConn{
 				readMessageFunc: func(_ context.Context) (openairt.MessageType, []byte, error) {