Bro,
If not mistaken, there should be 2 clips (left and right) on the A/C outlet. Push it in and the A/C outlet should come out. Try using something plastic to prevent scratch.
If it was me, i would remove the dashboard incase i sctarch something :)
ps : Better cut out your accesories in the picture you posted, so people dun target you (there might be thieves in this forum).
i tot just use screw driver & pry it out? no ah?