menu.lst.x86_64: Revert to clean menu.lst template.
menu.lst.x86_64: Revert to clean menu.lst template.

Revert local menu.lst templates from the acreto branch that erroneously
made it into the tree.

kishoredbn/barrelfish,utsav2601/cmpe295A,BarrelfishOS/barrelfish,mslovy/barrelfish,kishoredbn/barrelfish,BarrelfishOS/barrelfish,8l/barrelfish,kishoredbn/barrelfish,BarrelfishOS/barrelfish,BarrelfishOS/barrelfish,mslovy/barrelfish,8l/barrelfish,utsav2601/cmpe295A,linusyang/barrelfish,utsav2601/cmpe295A,8l/barrelfish,BarrelfishOS/barrelfish,linusyang/barrelfish,8l/barrelfish,kishoredbn/barrelfish,BarrelfishOS/barrelfish,kishoredbn/barrelfish,utsav2601/cmpe295A,mslovy/barrelfish,linusyang/barrelfish,BarrelfishOS/barrelfish,mslovy/barrelfish,mslovy/barrelfish,BarrelfishOS/barrelfish,mslovy/barrelfish,utsav2601/cmpe295A,linusyang/barrelfish,linusyang/barrelfish,kishoredbn/barrelfish,utsav2601/cmpe295A,8l/barrelfish,8l/barrelfish,BarrelfishOS/barrelfish