What is this crank and BB on this bike? And how do I take that sort of crank off?
The bottom bracket is a external bearing type in a threaded bottom bracket shell. I think it's likely a FSA Mega Exo as it's paired with a FSA crank, but could possibly be Shimano Hollowtech II.

You have removed the bearing pre-load cap, which does not retain the crank. To get the rank off undo the pinch bolts. On Shimano cranks there is a little tab of metal in the slot that fits into a groove in the axle. This needs to be removed to slide the crank off. Not sure if FSA cranks have the same feature. 

The crank will probably be quite hard to get off the axle, a few tabs with a mallet may be needed.