code: @Inline(value = "$1.remove($2)", statementExpression = true)
  	public static <K, V> V operator_remove(Map<K, V> map, K key) {
  		return map.remove(key);
  	}
docs: Remove a key from the given map.
  
  @param <K> type of the map keys.
  @param <V> type of the map values.
  @param map the map to update.
  @param key the key to remove.
  @return the removed value, or <code>null</code> if the key was not
  present in the map.
  @since 2.15