The RemoveTask function removes a task from a help database.  Note that you can not remove tasks which are included in the standard distribution of Maple with this command.

$\mathrm{with}\left(\mathrm{DocumentTools}\right)\:$

$\mathrm{RemoveTask}\left(''my\; task''\right)$

The DocumentTools[RemoveTask] command was introduced in Maple 16.

For more information on Maple 16 changes, see Updates in Maple 16.