No, in your situation, there is no need to delete the 1098-T.
If you had the same amount inn Box 5, you would be double taxed on the scholarship, but that is not the case.
You are paying tax on the AmeriCorps scholarship, as you should be since it was reported on a 1099-MISC.
Because you have to claim the scholarship as taxable income, you are allowed to use the expenese (1098-T Box 1) towards an education credit.
I assume as a graduate student, you received the Lifetime Learning Credit.
In your situation, you do not need to delete the 1098-T,
Remember that the 1040X shows what you owe (or will get back) AFTER the original 1040 is processed.
If you owe, you can pay that right away, make sure it is paid by April 15th, but if the original 1040 showed a refund, you will get that as well.
