function assocDelete(array, key) {
	  var index = assocIndexOf(array, key);
	  if (index < 0) {
	    return false;
	  }
	  var lastIndex = array.length - 1;
	  if (index == lastIndex) {
	    array.pop();
	  } else {
	    splice.call(array, index, 1);
	  }
	  return true;
	}
Removes `key` and its value from the associative array.

@private
@param {Array} array The array to query.
@param {string} key The key of the value to remove.
@returns {boolean} Returns `true` if the entry was removed, else `false`.