code: function _removeItems(arry, obj) {
    arry = _arrayify(arry)
    obj = _arrayify(obj)
    let i = 0
  
    while (i < arry.length) {
      if (_contains(obj, arry[i])) {
        arry.splice(i, 1)
      } else {
        i++
      }
    }
    return arry
  }
docs: Removes all instances of items in the given obj
  from the given arry.
  @param {Array.<*>} arry
  @param {*|Array.<*>} obj
  @returns {Array.<*>} arry
  @private
  @examples
  _removeItems(1, 2) // => [1]
  _removeItems(1, [2,3]) // => [1]
  _removeItems([1,2], 3) // => [1,2]
  _removeItems([1,2], [3,4]) // => [1,2]
  _removeItems([1,2], [3,1]) // => [2]
  _removeItems([1,2], [1,2]) // => []
  _removeItems([1,2,1,2,3], [2,3]) // => [1,1]