1) Bury 2) Discard knowledge of 3) Erase from memory 4) Forget 5) Get out of the habit of 6) Kick a habit 7) Lose knowledge of 8) Put out of memory 9) To break a habit 10) To discard the knowledge of 11) Try to forget 
• (v. t.) To forget, as what has been learned; to lose from memory; also, to learn the contrary of. • (v. t.) To fail to learn.
[v] - try to forget 2. [v] - discard something previously learnt, like an old habit
to forget or lose knowledge of. · to discard or put aside certain knowledge as being false or binding: to unlearn preconceptions.