findAndRemoveClassNames = function(classNames) {

  for (let i = classNames.length; i--;) {
    const elements = document.getElementsByClassName(classNames[i]);
    for (let j = elements.length; j--;) {
      elements[j].classList.remove(classNames[i]);
    }
  }

}
Searches the dom for elements that possess a certain class
and removes this class from each element.

@param {Array<string>} classNames - The class names to remove.