What do I do here, pluck/cut/leave alone?

[sativuhhh]

In flowering day 12 and noticed this on the top of a branch. I'm guessing I knicked it with the trimmers at some point or that site got damaged somehow. Should I trim it off? Just leave it?

Otherwise the grow is looking fantastic I think. Anyone notice any visual queues to any nute deficiency or anything in this view?

 

[StoneOtter]

Hi sativuhhh, I'd get rid of the dark stuff. The rest of the grow looks great. What is it?

 

[sativuhhh]

Two plants of Jack Herer. Any thoughts on plucking vs trimming to get that off?