Remove copyright/license from individual JS files

bell.js

@@ -1,22 +1,7 @@
 //
-// Applesoft BASIC in Javascript
 // Bell - play an audio file for the CHR$(7) "BEL" beep
 //
 
-// Copyright (C) 2009-2011 Joshua Bell
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
 var Bell;
 if (typeof Bell !== 'function') {
   Bell = function(base) {