Dude I'm in the same position as you and got freaking annihilated on here for posting the same question. So for me, I know for a fact that I want to complete my program, regardless of acceptances during this cycle, so I contacted the schools I applied to and told them what was going on. Had to withdraw from a few schools because of their policies. For the ones that didn't say I needed to withdraw, my application probably won't be looked on favorably this cycle since I would be hoping for a deferred entry, which doesn't make sense since I could have applied next year in a timely fashion. This cycle may even be a complete waste for me, depending on how the interviews go and whether or not I decide to withdraw post interview/before acceptance. I was told that I shouldn't bother applying next cycle either and wait for the 2019-2020 cycle to reapply, but I think that's a little extreme.
Even if you don't mind dropping out of your program without completing it, I'd definitely say to contact your schools. If I were you (and I actually am in the same shoes) I'd be really scared how the school would respond if they realized I was hiding the fact I was in a 2 year program (would they rescind acceptance or an interview because I was hiding this from them?). From what I was told, med schools don't want to be pulling people out of programs early (leaves incomplete research projects, wasted resources, etc.) so it would definitely depend on the school. EVMS states on their website that all programs must be complete by spring 2018 for 2017-2018 cycle, so if you applied there then you definitely need to withdraw. Ultimately it'll depend on the schools, so read their policies on their website and contact them separately!
Good luck and it's not the end of the world even though it may seem like it is right now