i don't think so... because they didn't have a chance to reject you.. u kind of withdrew...but i would send a letter...asking to withdraw your app officially...and explain that u weren't ready to apply for this year but u are going to apply next year... i doubt they will remember you personally...but there may be a box that asks if u applied here earlier...because some schools have different requirements for re-apps...like a new personal statement...did u send anything to them like letters of rec??