Bug 943461. Part 12: Remove spurious ScriptProcessorNode from test. r=karl

--HG--
extra : rebase_source : e902519b5e1d7bbd7f60545147edd8241e4d9455

content/media/webaudio/test/test_audioBufferSourceNode.html

@@ -19,8 +19,6 @@ var gTest = {
     }
 
     var source = context.createBufferSource();
-
-    var sp = context.createScriptProcessor(2048);
     source.start(0);
     source.buffer = buffer;
     return source;