Remove duplicated parameterized test.

The exact same test was being added twice.

Change-Id: Id0708a361cc2f5eb1fba49c3da02672e58d3acc5
Bug: 927900
Reviewed-on: https://chromium-review.googlesource.com/c/1474809Reviewed-by: Ryan Hamilton <rch@chromium.org>
Commit-Queue: Erik Chen <erikchen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#632727}

net/third_party/quic/platform/impl/batch_writer/quic_batch_writer_test.h

@@ -116,8 +116,6 @@ MakeQuicBatchWriterTestParams() {
         if (packet_size <= data_size && (data_size / packet_size < 200)) {
           params.push_back({QuicMakeUnique<QuicUdpBatchWriterIOTestDelegateT>(),
                             address_family, data_size, packet_size});
-          params.push_back({QuicMakeUnique<QuicUdpBatchWriterIOTestDelegateT>(),
-                            address_family, data_size, packet_size});
         }
       }
     }