Delete the current feature from vector source and XYZ data source.

OL.deleteFeature.js

btnDelete.onclick = function() {

  btnDelete.classList.remove('active');

  if (!currentFeature) return;

  const xhr = new XMLHttpRequest();

  xhr.open('GET', 'https://geolytix.xyz/dev/api/location/edit/delete?locale=GB&layer=Scratch&table=dev.scratch&id=' + currentFeature.getProperties().id);

  xhr.setRequestHeader('Content-Type', 'application/json');
  xhr.responseType = 'json';

  xhr.onload = e => {

    if (e.target.status !== 200) return;

    sourceVector.clear();

    clearTileCache();
  };

  xhr.send();
};