I 4bet AKs, guy calls, just give up on the flop?

[deaders]

Villain is a fairly standard tag 21/17ish but I dont think he is particularly good. Ive been stealing a ton on this table and have been seen 4betting less than premium hands.

Full Tilt Poker, $1/$2 NL Hold'em Cash Game, 6 Players
LegoPoker Hand History Converter

UTG: $220.95
MP: $197
CO: $71.60
Hero (BTN): $330.20
SB: $56.60
BB: $204.95

Pre-Flop: A[img]/images/graemlins/club.gif[/img] K[img]/images/graemlins/club.gif[/img] dealt to Hero (BTN)
3 folds, <font color="red">Hero raises to $7</font>, SB folds, <font color="red">BB raises to $22</font>, <font color="red">Hero raises to $68</font>, BB calls $46

Flop: ($137) 9[img]/images/graemlins/club.gif[/img] 7[img]/images/graemlins/spade.gif[/img] J[img]/images/graemlins/spade.gif[/img] (2 Players)
BB checks,