Remove COPYING.OPL

The only (old) reference to it was from Marco's artwork in
WPrefs, but that was later changed to the GPL.

COPYING.OPL

@@ -1,91 +0,0 @@
-
-     OpenContent License (OPL)
-     Version 1.0, July 14, 1998.
-
-     This document outlines the principles underlying the OpenContent
-     (OC) movement and may be redistributed provided it remains
-     unaltered. For legal purposes, this document is the license under
-     which OpenContent is made available for use.
-
-     The original version of this document may be found at
-     http://www.opencontent.org/opl.shtml
-
-     LICENSE
-
-     Terms and Conditions for Copying, Distributing, and Modifying
-
-     Items other than copying, distributing, and modifying the Content
-     with which this license was distributed (such as using, etc.) are
-     outside the scope of this license.
-
-     1. You may copy and distribute exact replicas of the OpenContent
-     (OC) as you receive it, in any medium, provided that you
-     conspicuously and appropriately publish on each copy an appropriate
-     copyright notice and disclaimer of warranty; keep intact all the
-     notices that refer to this License and to the absence of any
-     warranty; and give any other recipients of the OC a copy of this
-     License along with the OC. You may at your option charge a fee for
-     the media and/or handling involved in creating a unique copy of the
-     OC for use offline, you may at your option offer instructional
-     support for the OC in exchange for a fee, or you may at your option
-     offer warranty in exchange for a fee. You may not charge a fee for
-     the OC itself. You may not charge a fee for the sole service of
-     providing access to and/or use of the OC via a network (e.g. the
-     Internet), whether it be via the world wide web, FTP, or any other
-     method.
-
-     2. You may modify your copy or copies of the OpenContent or any
-     portion of it, thus forming works based on the Content, and
-     distribute such modifications or work under the terms of Section 1
-     above, provided that you also meet all of these conditions:
-
-     a) You must cause the modified content to carry prominent notices
-     stating that you changed it, the exact nature and content of the
-     changes, and the date of any change.
-
-     b) You must cause any work that you distribute or publish, that in
-     whole or in part contains or is derived from the OC or any part
-     thereof, to be licensed as a whole at no charge to all third
-     parties under the terms of this License, unless otherwise permitted
-     under applicable Fair Use law.
-
-     These requirements apply to the modified work as a whole. If
-     identifiable sections of that work are not derived from the OC, and
-     can be reasonably considered independent and separate works in
-     themselves, then this License, and its terms, do not apply to those
-     sections when you distribute them as separate works. But when you
-     distribute the same sections as part of a whole which is a work
-     based on the OC, the distribution of the whole must be on the terms
-     of this License, whose permissions for other licensees extend to
-     the entire whole, and thus to each and every part regardless of who
-     wrote it. Exceptions are made to this requirement to release
-     modified works free of charge under this license only in compliance
-     with Fair Use law where applicable.
-
-     3. You are not required to accept this License, since you have not
-     signed it. However, nothing else grants you permission to copy,
-     distribute or modify the OC. These actions are prohibited by law if
-     you do not accept this License. Therefore, by distributing or
-     translating the OC, or by deriving works herefrom, you indicate
-     your acceptance of this License to do so, and all its terms and
-     conditions for copying, distributing or translating the OC.
-
-     NO WARRANTY
-
-     4. BECAUSE THE OPENCONTENT (OC) IS LICENSED FREE OF CHARGE, THERE
-     IS NO WARRANTY FOR THE OC, TO THE EXTENT PERMITTED BY APPLICABLE
-     LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS
-     AND/OR OTHER PARTIES PROVIDE THE OC "AS IS" WITHOUT WARRANTY OF ANY
-     KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
-     THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
-     PARTICULAR PURPOSE. THE ENTIRE RISK OF USE OF THE OC IS WITH YOU.
-     SHOULD THE OC PROVE FAULTY, INACCURATE, OR OTHERWISE UNACCEPTABLE
-     YOU ASSUME THE COST OF ALL NECESSARY REPAIR OR CORRECTION.
-
-     5. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
-     WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY
-     MIRROR AND/OR REDISTRIBUTE THE OC AS PERMITTED ABOVE, BE LIABLE TO
-     YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR
-     CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE
-     THE OC, EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
-     POSSIBILITY OF SUCH DAMAGES.