I do the same thing! The secret would be one of two things: explicitly defining exactly which labels and values you want instead of looping through all, OR just putting an if-statement in the code I gave you. So for example,

for (Key in values) {
    var label = Key;
    var data = values[Key];
if (label != 'Sensitive Item You Don't Want')   {
htmlBody += '<li>' + label + ": " + data + '</li>';
  };
};