L1CaloFEXSim: Fix out-of-bounds write.
FillgTowerEDMForward was writing tower Ets to the output array using the wrong indices, corrupting the stack. But this is anyway redundant with what's already done in GetEnergyMatrix, so just remove that bit.
FillgTowerEDMForward was writing tower Ets to the output array using the wrong indices, corrupting the stack. But this is anyway redundant with what's already done in GetEnergyMatrix, so just remove that bit.