Dock Dodger 0.1
Dock Dodger - rid almost any application of its Dock icon
With Dock Doger, removing the Dock icon is as easy as drag and drop. Simply drag in the application you want to un-dock and Dock Dodger takes care of the rest. When you re-launch that application, it will be sans Dock icon. Want the Dock icon back? Just re-drag the application into Dock Dodger and everything's back to normal.
Please note that un-docking an app can cause unusual behaviors or restrict access to certain features. See the Dock Dodger website for more details.