use config tests

src/Ocelot/Configuration/Creator/FileOcelotConfigurationCreator.cs

@@ -22,7 +22,6 @@ namespace Ocelot.Configuration.Creator
     {
         private readonly IOptions<FileConfiguration> _options;
         private readonly IConfigurationValidator _configurationValidator;
-
         private readonly ILogger<FileOcelotConfigurationCreator> _logger;
         private readonly ILoadBalancerFactory _loadBalanceFactory;
         private readonly ILoadBalancerHouse _loadBalancerHouse;

src/Ocelot/ServiceDiscovery/IServiceDiscoveryProviderFactory.cs

@@ -1,4 +1,3 @@
-using System;
 using Ocelot.Configuration;
 
 namespace Ocelot.ServiceDiscovery