noremove flag removal

Author: 
Vorcet

The changes to flag removals via AP were to support upcoming changes
That are no longer going to happen (At least in the forseeable future)
As a result, You can once again remove the noremove nouncurse etc flags via AP.
Rotdeath/Inventory is still a no-go as i will be working out a different
Solution to this particular issue.

In addition We need more ways to obtain AP, So look forward to some additions
and tweaks in that regard.

Helpfile will be updated to reflect the change soon.