removed dep we dont need in dsrfm (#636)

src/Ocelot/DownstreamRouteFinder/Middleware/DownstreamRouteFinderMiddleware.cs

@@ -13,17 +13,14 @@ namespace Ocelot.DownstreamRouteFinder.Middleware
     {
         private readonly OcelotRequestDelegate _next;
         private readonly IDownstreamRouteProviderFactory _factory;
-        private readonly IInternalConfigurationRepository _repo;
         private readonly IMultiplexer _multiplexer;
 
         public DownstreamRouteFinderMiddleware(OcelotRequestDelegate next,
             IOcelotLoggerFactory loggerFactory,
             IDownstreamRouteProviderFactory downstreamRouteFinder,
-            IInternalConfigurationRepository repo,
             IMultiplexer multiplexer)
                 :base(loggerFactory.CreateLogger<DownstreamRouteFinderMiddleware>())
         {
-            _repo = repo;
             _multiplexer = multiplexer;
             _next = next;
             _factory = downstreamRouteFinder;