....they will have been removed!
If you bought the bike secondhand, the chances are that these would have been removed previously anyway.
If that didn't happen, then when the filter was swapped (presumably for an undetank one) then they would have removed the restrictors.
If I remember rightly, they are fitted as standard to decrease the airbox noise levels so that the bike can meet certain noise restriction levels/standards.
These are huge great lumps of rubber and probably and a few mph to the bike in weight saving alone!!!
In order to check, you'd have to remove that tank, but you should be OK.
Tim