Revert of AudioContext.decodeAudioData returns a Promise

LayoutTests/webaudio/decode-audio-data-promise-expected.txt

Index: LayoutTests/webaudio/decode-audio-data-promise-expected.txt
diff --git a/LayoutTests/webaudio/decode-audio-data-promise-expected.txt b/LayoutTests/webaudio/decode-audio-data-promise-expected.txt
deleted file mode 100644
index ce15cb7f4c24e44342360bcb5178144144c6b817..0000000000000000000000000000000000000000
--- a/LayoutTests/webaudio/decode-audio-data-promise-expected.txt
+++ /dev/null
@@ -1,18 +0,0 @@
-Basic tests for decodeAudioData promise.
-
-On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
-
-
-PASS decodeAudioData(null) correctly rejected promise: NotSupportedError: invalid ArrayBuffer for audioData.
-PASS Decode valid file with promise: Correctly succeeded in decoding resources/media/24bit-44khz.wav
-PASS Decode invalid file with promise: Correctly failed to decode resources/media/invalid-audio-file.txt: EncodingError: Unable to decode audio data
-PASS Decoding valid file with promise and callback: successCallback invoked correctly
-PASS Decoding valid file with promise and callback: Promise correctly fulfilled
-PASS Decoding valid file with promise and callback: Promise and successCallback returned the same buffer
-PASS Decoding invalid file with promise and callback: errorCallback invoked correctly with: EncodingError: Unable to decode audio data
-PASS Decoding invalid file with promise and callback: Promise correctly rejected with: EncodingError: Unable to decode audio data
-PASS Correctly decoded data after the context has been closed
-PASS successfullyParsed is true
-
-TEST COMPLETE
-