Strip XMP Packet from the end of binary image data

[Tom Glod]

Hi Livecode Geniuses....., I've run into a problem in my application ...i
have tracked the bug down to Adobe Fireworks adding an XMP packet to the
end of clipboarddata["image"]

<?xpacket begin="" id="W5M0MpCehiHzreSzNTczkc9d"?>
<x:xmpmeta xmlns:x="adobe:ns:meta/" x:xmptk="Adobe XMP Core 5.3-c011
66.145661, 2012/02/06-14:56:27        ">
   <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#">
      <rdf:Description rdf:about=""
            xmlns:xmp="http://ns.adobe.com/xap/1.0/">
         <xmp:CreatorTool>Adobe Fireworks CS6 (Windows)</xmp:CreatorTool>
         <xmp:CreateDate>2019-01-31T19:16:20Z</xmp:CreateDate>
         <xmp:ModifyDate>2019-01-31T19:16:22Z</xmp:ModifyDate>
      </rdf:Description>
      <rdf:Description rdf:about=""
            xmlns:dc="http://purl.org/dc/elements/1.1/">
         <dc:format>image/png</dc:format>
      </rdf:Description>
   </rdf:RDF>
</x:xmpmeta>

Whats worse is that Fireworks seems to update this data every second in the
clipboard. this triggers my "ClipboardChanged" function..and
chaos ensues.(the id changes)

Having tracked down the cause it down, I need to strip it from the end of
the image binary.

I am a little stumped .....coders block i guess....... and I have a feeling
that LC has a really simple way of doing it ...and I will take hours trying
to figure it out.

So glad I tracked this bug down it was keeping me up.

Thank you for any help.