Revert "Add AudioDecoderFactory to NetEqTest constructor."

This reverts commit daa970f33e1923c5651a4a63c18e3d5361d0a795.

Reason for revert: Speculative revert due to downstream breakage

Original change's description:
> Add AudioDecoderFactory to NetEqTest constructor.
>
> Update EventLogAnalyzer to not depend on builtin audio decoders.
>
> Bug: webrtc:8396, webrtc:10080
> Change-Id: Ie02ed9cda6d4f11bfdf2e65eb6482283b7520738
> Reviewed-on: https://webrtc-review.googlesource.com/c/114301
> Reviewed-by: Alex Loiko <aleloi@webrtc.org>
> Reviewed-by: Ivo Creusen <ivoc@webrtc.org>
> Reviewed-by: Björn Terelius <terelius@webrtc.org>
> Commit-Queue: Niels Moller <nisse@webrtc.org>
> Cr-Commit-Position: refs/heads/master@{#26026}

TBR=mbonadei@webrtc.org,aleloi@webrtc.org,kwiberg@webrtc.org,terelius@webrtc.org,nisse@webrtc.org,ivoc@webrtc.org

No-Try: True
Bug: webrtc:8396, webrtc:10080
Change-Id: Ided750d8ed800d8a38f7cce8f72095d8ed1bc6cb
Reviewed-on: https://webrtc-review.googlesource.com/c/114552
Commit-Queue: Oleh Prypin <oprypin@webrtc.org>
Reviewed-by: Oleh Prypin <oprypin@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#26030}
diff --git a/modules/audio_coding/neteq/neteq_unittest.cc b/modules/audio_coding/neteq/neteq_unittest.cc
index 5dd77e5..922f9fc 100644
--- a/modules/audio_coding/neteq/neteq_unittest.cc
+++ b/modules/audio_coding/neteq/neteq_unittest.cc
@@ -1726,9 +1726,8 @@
       new TimeLimitedNetEqInput(std::move(input), 20000));
   std::unique_ptr<AudioSink> output(new VoidAudioSink);
   NetEqTest::Callbacks callbacks;
-  NetEqTest test(config, CreateBuiltinAudioDecoderFactory(), codecs, ext_codecs,
-                 nullptr, std::move(input_time_limit), std::move(output),
-                 callbacks);
+  NetEqTest test(config, codecs, ext_codecs, nullptr,
+                 std::move(input_time_limit), std::move(output), callbacks);
   test.Run();
   const auto stats = test.SimulationStats();
   EXPECT_EQ(0, stats.accelerate_rate);