Remove now useless QUIC method AdjustErrorForVersion() which has been a no-op for some time.

net/quic/chromium/quic_http_stream_test.cc

Index: net/quic/chromium/quic_http_stream_test.cc
diff --git a/net/quic/chromium/quic_http_stream_test.cc b/net/quic/chromium/quic_http_stream_test.cc
index eb672fb4878de1a4efb6243cdff4a7285f8eb961..d6b50081d40670a6f3bd5590ba3d789bd1752a13 100644
--- a/net/quic/chromium/quic_http_stream_test.cc
+++ b/net/quic/chromium/quic_http_stream_test.cc
@@ -465,9 +465,8 @@ class QuicHttpStreamTest : public ::testing::TestWithParam<QuicVersion> {
 
   std::unique_ptr<QuicReceivedPacket> ConstructClientRstStreamPacket(
       QuicPacketNumber packet_number) {
-    return client_maker_.MakeRstPacket(
-        packet_number, true, stream_id_,
-        AdjustErrorForVersion(QUIC_RST_ACKNOWLEDGEMENT, GetParam()));
+    return client_maker_.MakeRstPacket(packet_number, true, stream_id_,
+                                       QUIC_RST_ACKNOWLEDGEMENT);
   }
 
   std::unique_ptr<QuicReceivedPacket> ConstructClientRstStreamCancelledPacket(