delete history log in metadata

Here is an example of a Script that would remove Photoshop History Log metadata from an open document:

// Remove Photoshop History Log Metadata from Open Doc.jsx

#target photoshop

removeHistoryLogMeta();

function removeHistoryLogMeta() {
    if (!documents.length) return;
    if (ExternalObject.AdobeXMPScript == undefined) ExternalObject.AdobeXMPScript = new ExternalObject("lib:AdobeXMPScript");
    var xmp = new XMPMeta(activeDocument.xmpMetadata.rawData);
    XMPUtils.removeProperties(xmp,XMPConst.NS_PHOTOSHOP, "History", XMPConst.REMOVE_ALL_PROPERTIES);
    app.activeDocument.xmpMetadata.rawData = xmp.serialize();
} 

Depending on workflow requirements, a script that processed a folder of files, or a version for Adobe Bridge script may be preferred.

EDIT: Here is one for a folder of supported file formats, you can add/remove file extensions as required from the code:

// Remove Photoshop History Log Metadata from Folder of Files.jsx

#target photoshop;  

var inputFolder= Folder.selectDialog ("Please select folder to process");  
if(inputFolder != null){  
var fileList  = inputFolder.getFiles(/\.(jpg|jpeg|tif|tiff|psd|png)$/i);  
for(var a in fileList){removeHistoryLogMeta(fileList[a]);}  
}  
function removeHistoryLogMeta(selectedFile) {          
if (ExternalObject.AdobeXMPScript == undefined) ExternalObject.AdobeXMPScript = new ExternalObject("lib:AdobeXMPScript");       
var xmpFile = new XMPFile( selectedFile.fsName, XMPConst.FILE_UNKNOWN, XMPConst.OPEN_FOR_UPDATE | XMPConst.OPEN_USE_SMART_HANDLER );   
var xmp = xmpFile.getXMP();  
xmp.deleteProperty(XMPConst.NS_PHOTOSHOP, "History");  
if (xmpFile.canPutXMP(xmp)) {   
        xmpFile.putXMP(xmp);  
         xmpFile.closeFile(XMPConst.CLOSE_UPDATE_SAFELY);   
         }                
};    

EDIT 2:

Here is one for selected files in Adobe Bridge (look in the Tools menu once installed):

/*
Remove Photoshop History Log Metadata from Adobe Bridge.jsx
Based on:
https://community.adobe.com/t5/photoshop-ecosystem-discussions/hide-camera-raw-settings-in-jpeg-metadata/m-p/10306319
*/

#target bridge

if (BridgeTalk.appName == "bridge") {
    removeHistoryLogMeta = new MenuElement("command", "Remove Photoshop History Log Metadata", "at the end of Tools");
}
removeHistoryLogMeta.onSelect = function () {
    if (ExternalObject.AdobeXMPScript == undefined) ExternalObject.AdobeXMPScript = new ExternalObject("lib:AdobeXMPScript");
    var sels = app.document.selections;
    for (var a in sels) {
        var thumb = new Thumbnail(app.document.selections[a]);
        var md = thumb.synchronousMetadata;
        var xmp = new XMPMeta(md.serialize());
        if (thumb.hasMetadata) {
            XMPUtils.removeProperties(xmp, XMPConst.NS_PHOTOSHOP, "History", XMPConst.REMOVE_ALL_PROPERTIES);
            var updatedPacket = xmp.serialize(XMPConst.SERIALIZE_OMIT_PACKET_WRAPPER | XMPConst.SERIALIZE_USE_COMPACT_FORMAT);
            thumb.metadata = new Metadata(updatedPacket);
        }
    }
};

https://prepression.blogspot.com/2017/11/downloading-and-installing-adobe-scripts.html