Remove [NoInterfaceObject] from several WebAudio IDL interfaces

Source/modules/webaudio/AudioNode.idl

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 [
-    NoInterfaceObject,
     Conditional=WEB_AUDIO
 ] interface AudioNode {
     readonly attribute AudioContext context;
     readonly attribute unsigned long numberOfInputs;
     readonly attribute unsigned long numberOfOutputs;
 
     [SetterRaisesException] attribute unsigned long channelCount;
 
     [SetterRaisesException] attribute DOMString channelCountMode;
 
     [SetterRaisesException] attribute DOMString channelInterpretation;
 
     [RaisesException] void connect(AudioNode? destination, [Default=Undefined] optional unsigned long output, [Default=Undefined] optional unsigned long input);
 
     [RaisesException] void connect(AudioParam? destination, [Default=Undefined] optional unsigned long output);
 
     [RaisesException] void disconnect([Default=Undefined] optional unsigned long output);
 };