A character token is stuck with "New Ability 0" macro

I recently created some basic macros (A couple for healing potions and a Roll Initiative macro). For the most part these work fine, but one character token has an additional token action "New Ability 0". I have no macro called this, and I can't figure out how to get rid of it. None of the other character tokens see this.

Open the character sheet associated with that token, particularly the Attributes & Abilities tab, and see if there is an ability there that is marked to show as a token action.  I think the "New Ability 0" is the default name for the first new ability when you hit the Add button.

Oh wow, I never even looked at that tab before. So that section is basically for making token-specific macros? Thank you very much!

Yes, anything there that is marked as a token action will only show when the associated token is selected.  It is also a little simpler to call attributes in the ability macros on that tab, since they look for the attribute on that sheet by default.  Instead of needing to do @{selected|attributename} or @{charactername|attributename} like you do in the collections tab macros, you can just use @{attributename} to pull values off of the sheet where you are writing the ability macro. There are still times you may want to use selected, but those are mostly for trickier use of macros and sheets like the macro character sheet idea from the Roll20 Tricks thread.