As far as I studied some well-established reference, and discussed with some scholars (yes, they are hanafi), (i'll update my answer asap i get hold onto related on-line reference)
if you have no other feasible/safe way to store your money in a interest-based bank,
- you should take out the "riba" amount asap, to separate it from your halal money,
- use it somewhere "dirty" (but needed) public spend, e.g. construction of masjid toilet, purchase toilet-consumables (such as toilet-papers, cleaning items etc.), or donate to a absolutely poor person.
- But, you have to make sure that you are doing it WITHOUT any intention of earning "good deed" (neki) or reward from ALLAH ta'ala. You are just dispensing the money.
Again, this is the least way out.
The most beneficial way to store your money is not the bank, rather make it useful for your here-after.
and ALLAH ta'ala knows the best, and may forgive me for my ignorance.