You have three options.
1) Leave it alone. You really didn't want to remove it anyway.
2) Weld a nut on the end of the stripped out torx, and use a wrench on the nut. If you don't have a welder, it's an easy task for any competent guy with a little 110v welder.
3) Drill out the head of that (torx) bolt, until the head is completely removed. Then, remove all the other (torx) bolts holding that hinge on. When all the bolts are removed (or drilled), take the hinge completely off the vehicle. This will give access to the (broken & stuck) bolt studs. Soak them in Kroil (or PBlaster) overnight, and repeatedly. Use vise grips to remove the broke pieces. If Vise grips are unable, you can always revert to #2
1992 YJ, 401 V8, EFI, TH400, Atlas, D60s, Detroits, Warn 8274, Cage, 37 Krawlers
1997 TJ, 350 V8, EFI, TH400, Atlas 4spd, D60s, Detroits, Warn 12000, Cage, 40 Kevlars
TTC 1994, TTC 2012, Trail Tour participant.