Maybe you could drill out some of the material on your pedals or something. Don't run seatless but get a carbon seat with Ti rails, that'll be lighter than the BMX looking seat you have ATM...
Also cut off almost all of your seat post. Adjust it where you want it, mark it off and leave just enough to clamp.
-get a macneil sl seat and seatpost -cut your bars (if they are long i cant see from the pics) -lose the front break -dont ride such a big bashguard -clean it -the lighter the spokes/nipples/rims the better -looks from the pics that the bar and stem combo can be way lighter (go blackmarket stem, raceface bars) -lose the dust caps you have on there (they look heavy) -online it says your wheels weigh 4 lb and 14.66 oz
thats about all i can say until i actually see specs not just 2 pictures
could get a sdg i beam seat and post,they do a jump specific one,i saved about 300 grammes give or take switching mine out,so with a dedicated jump seat could be nearly a pound.
If you bought Wellgo MG-1 pedals ($60), you'd save almost half a pound there. If you bought a new chain guide system (MRP G2, E-13 LG-1, or Gamut) then you would also save a lot of weight. Also, run 6" rotors. There's no need for big ones like that. Maybe a 7" in the front if you feel so inclined. Another thing you could do, is get new bar/stem combo. Looks like the Truvativ tank of a stem. Sunline makes a very light stem, and their V1 bar is very nice. Lastly, you could look into a new headset or bottom bracket. I don't know what you have in there now, but those are a tricky place to hide extra weight.
Also you could drill out some of the material and shave the guides on your chainguide and drill out some material on you bashguard too! Easton makes some light bar/stem combos could try that.