Remove Type parameter for IHttpClient send method

This keeps the IHttpClient interface simpler and ensures the
deserialization responsibility lies outside of that class. It only
needed the Type parameter for a special case that could be handled in a
better way.

Octokit/Helpers/HttpClientExtensions.cs

@@ -7,16 +7,12 @@ namespace Octokit
 {
     public static class HttpClientExtensions
     {
-        /// <summary>
-        /// OBSOLETE
-        /// </summary>
-        [Obsolete("This will be removed in a future release")]
-        public static Task<IResponse<T>> Send<T>(this IHttpClient httpClient, IRequest request)
+        public static Task<IResponse> Send(this IHttpClient httpClient, IRequest request)
         {
             Ensure.ArgumentNotNull(httpClient, "httpClient");
             Ensure.ArgumentNotNull(request, "request");
 
-            return httpClient.Send<T>(request, CancellationToken.None);
+            return httpClient.Send(request, CancellationToken.None);
         }
     }
 }