Delete enum NetEqDecoder.

A trimmed down version is moved to legacy_encoded_audio_frame_unittest.cc
where it's used for test parameterization.

Bug: webrtc:10185
Change-Id: I9abda22f9806b831b6ca4b27d6bcc888285f50f2
Reviewed-on: https://webrtc-review.googlesource.com/c/116961
Reviewed-by: Ivo Creusen <ivoc@webrtc.org>
Commit-Queue: Niels Moller <nisse@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#26218}
diff --git a/modules/audio_coding/neteq/neteq_impl_unittest.cc b/modules/audio_coding/neteq/neteq_impl_unittest.cc
index dd1fa8c..68acd8d 100644
--- a/modules/audio_coding/neteq/neteq_impl_unittest.cc
+++ b/modules/audio_coding/neteq/neteq_impl_unittest.cc
@@ -331,8 +331,8 @@
 
         *dec = std::move(mock_decoder);
       }));
-  DecoderDatabase::DecoderInfo info(NetEqDecoder::kDecoderPCMu, absl::nullopt,
-                                    mock_decoder_factory);
+  DecoderDatabase::DecoderInfo info(SdpAudioFormat("pcmu", 8000, 1),
+                                    absl::nullopt, mock_decoder_factory);
 
   // Expectations for decoder database.
   EXPECT_CALL(*mock_decoder_database_, GetDecoderInfo(kPayloadType))