Allow ntfsresize command to report real-time %age progress (#697662)

Remove the -P, no progress bar option, from the ntfsresize command.
This allows the command to display the %age complete on its output which
is displayed in the operation details dialog, updated in real time.
Possible since:
    Bug #685740 - Refactor to use asynchronous command execution

Bug #697662 - Do not hide the progress of the tools used