Update license header for Tremolo and remove unused script.

Change-Id: I10d4885e51c15f7e4adfa6455ccab50561db9a94
diff --git a/Tremolo/dpen.s b/Tremolo/dpen.s
index 278b061..6123f8f 100644
--- a/Tremolo/dpen.s
+++ b/Tremolo/dpen.s
@@ -1,5 +1,36 @@
 @ Tremolo library
-@ Copyright (C) 2009 Robin Watts for Pinknoise Productions Ltd
+@-----------------------------------------------------------------------
+@ Copyright (C) 2002-2009, Xiph.org Foundation
+@ Copyright (C) 2010, Robin Watts for Pinknoise Productions Ltd
+@ All rights reserved.
+
+@ Redistribution and use in source and binary forms, with or without
+@ modification, are permitted provided that the following conditions
+@ are met:
+
+@     * Redistributions of source code must retain the above copyright
+@ notice, this list of conditions and the following disclaimer.
+@     * Redistributions in binary form must reproduce the above
+@ copyright notice, this list of conditions and the following disclaimer
+@ in the documentation and/or other materials provided with the
+@ distribution.
+@     * Neither the names of the Xiph.org Foundation nor Pinknoise
+@ Productions Ltd nor the names of its contributors may be used to
+@ endorse or promote products derived from this software without
+@ specific prior written permission.
+@
+@ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+@ "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+@ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+@ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+@ OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+@ SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+@ LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+@ DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+@ THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+@ (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+@ ----------------------------------------------------------------------
 
     .text