To remove the built-in text from a KendoUpload control, override the localization properties with an empty string. In your case, remove "Done":
$("#files").kendoUpload({
multiple: true,
async: {
saveUrl: "...",
removeUrl: "...",
autoUpload: false
},
localization: {
// Override built-in text "Done"
headerStatusUploaded:"",
statusUploaded:""
}
...
});