How can I remove junk RAW DATA from file?

Hello everyone,

I am hoping one of you can help me.

I have imagery that has excessive amounts of junk information/data in the files Raw Data.

I am talking hundreds or lines such as,

               <rdf:li>006866056250D71BF7680982B0D05DF3</rdf:li>

               <rdf:li>006DD14C462C310A9EF1CBDBCA7B7495</rdf:li>

               <rdf:li>00705EFBC9A5EE18A2EED4A717FB5F3B</rdf:li>

               <rdf:li>007658278627CC4858C4936D67F0DF67</rdf:li>

               <rdf:li>0078FB3D86D842E685C914C2D00A2E40</rdf:li>

               <rdf:li>0079BF078397D573B94DED2786347029</rdf:li>

               <rdf:li>0081E97051E1C1286376E67546DC1F9C</rdf:li>

               <rdf:li>0084E230C00349DC642AC80C2170155A</rdf:li>

               <rdf:li>00851DEE279751E47814F624C7D3F464</rdf:li>

               <rdf:li>00852F3629FD42D645AD7D1CD73D0C4E</rdf:li>

               <rdf:li>008704B02FF85F234D4D0F89072C6796</rdf:li>

               <rdf:li>00878D4A885675232111A258BC24458F</rdf:li>

               <rdf:li>008833914D82F173A079227F0DB988A7</rdf:li>

               <rdf:li>008AF0CF7AC7E67525301FB6AE481ADB</rdf:li>

               <rdf:li>008BC64A056514C18902F6F2CE088528</rdf:li>

               <rdf:li>008F67961E96136A1D348885E296E63F</rdf:li>

               <rdf:li>00959AD22DF8E112CC4D5D4EE7574935</rdf:li>

               <rdf:li>00988D8BF2DA968D5672B08031534596</rdf:li>

               <rdf:li>0099345CD06DDE9EE8E15AC91B4FE71C</rdf:li>

               <rdf:li>009B4FDA6C18CB8E8138D3402E4952A5</rdf:li>

               <rdf:li>009BDAEEBC2332EA4708078E3F9CF771</rdf:li>

               <rdf:li>009C343AE445CAA695C298107FFCFE65</rdf:li>

               <rdf:li>009DFBD4C9F04397A664A71A4465BE52</rdf:li>

               <rdf:li>00A946DD7AE61C92FAD4FA692989CE84</rdf:li>

               <rdf:li>00ABF1CB64AB8E17AD44227EFDE04411</rdf:li>

               <rdf:li>00AFD834575791274DF00ABA026367FD</rdf:li>

               <rdf:li>00B429296471BFB41FD5D7ADEF1E41C4</rdf:li>

etc....

These cause the file sizes to become excessively large. Is there a way to remove  this?

I used to have a script that seemed to work, but, no longer seems to remove the junk, and I cannot understand why.

It is, 

function deleteDocumentAncestorsMetadata() { 

whatApp = String(app.name);//String version of the app name 

if(whatApp.search("Photoshop") > 0)  { //Check for photoshop specifically, or this will cause errors 

//Function Scrubs Document Ancestors from Files 

if(!documents.length) { 

alert("There are no open documents. Please open a file to run this script.") 

return;  

} 

if (ExternalObject.AdobeXMPScript == undefined) ExternalObject.AdobeXMPScript = new ExternalObject("lib:AdobeXMPScript");  

var xmp = new XMPMeta( activeDocument.xmpMetadata.rawData);  

// Begone foul Document Ancestors! 

xmp.deleteProperty(XMPConst.NS_PHOTOSHOP, "DocumentAncestors"); 

app.activeDocument.xmpMetadata.rawData = xmp.serialize(); 

} 

} 

//Now run the function to remove the document ancestors 

deleteDocumentAncestorsMetadata();

if anyone knows a way to clear out this unnecessary metadata, please share!

Thank you in advance!