Remove an extra trailing comma to avoid breakage with an upcoming Crosstool release.

Tested:
  before: http://sponge2/a94f1f30-0f95-406a-9d5e-7d46921282ba
  after: http://sponge2/ad698020-3ad5-43c1-9b31-2e3ceeae00bd
PiperOrigin-RevId: 754963643
diff --git a/quiche/quic/moqt/moqt_session_test.cc b/quiche/quic/moqt/moqt_session_test.cc
index 74e0f61..2c8797c 100644
--- a/quiche/quic/moqt/moqt_session_test.cc
+++ b/quiche/quic/moqt/moqt_session_test.cc
@@ -197,7 +197,7 @@
       return quiche::ReadStream::PeekResult(
           absl::string_view(buffer.data() + data_read,
                             buffer.size() - data_read),
-          fin && data_read == buffer.size(), fin, );
+          fin && data_read == buffer.size(), fin);
     }));
     EXPECT_CALL(*stream, ReadableBytes()).WillRepeatedly(Invoke([&]() {
       return buffer.size() - data_read;