Remove logging from refresh token client (#407)

Author: jianghaolu

azure-client-authentication/src/main/java/com/microsoft/azure/credentials/RefreshTokenClient.java

@@ -9,8 +9,6 @@
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.microsoft.aad.adal4j.AuthenticationResult;
 import com.microsoft.azure.management.apigeneration.Beta;
-import com.microsoft.rest.LogLevel;
-import com.microsoft.rest.interceptors.LoggingInterceptor;
 import com.microsoft.rest.serializer.JacksonAdapter;
 import okhttp3.OkHttpClient;
 import retrofit2.Retrofit;
@@ -32,7 +30,7 @@ final class RefreshTokenClient {
     private final RefreshTokenService service;
 
     RefreshTokenClient(String baseUrl, Proxy proxy) {
-        OkHttpClient.Builder builder = new OkHttpClient.Builder().addInterceptor(new LoggingInterceptor(LogLevel.BODY_AND_HEADERS));
+        OkHttpClient.Builder builder = new OkHttpClient.Builder();
         if (proxy != null) {
             builder = builder.proxy(proxy);
         }