I didn't find one of these anywhere, so I went ahead and made one, since I'm a Rogue fan and didn't want to mod my game too heavily.
Rogue's Heal ability is glitched in XML2, not only removing positive buffs created by other characters, which it shouldn't do, but also seriously gimping the damage output of Rogue's other powers, even after the duration of Heal has expired (I tested this with Torpedo -- after using Heal, the damage drops to that of a normal punch, and the only way to reset it seems to be to return to wherever your base is).
This tiny mod simply deletes the lines that attempt to remove debuffs, since it was removing far more than originally intended. I did not modify the description of the power, merely its effect.
The file goes in the /data/powerstyles directory.Here.