You do not make any adjustments to your active duty W-2 to account for BAH and BAS. Enter your W-2 as is.
BAS and BAH are tax exempt allowances, so not taxable to you as income. Your W-2 reflects the portion of your taxable military wages in Box 1. Your W-2 will also reflect if you receive non-taxable combat pay at any point during the year (Box 12, Code Q).
