NSW Spent convection and removal of criminal record

[Syed Razvi]

I came to Australia on study visa and during my stay in Australia i was convicted a crime of " using carrier service to groom under 16 " and sentenced by district court of 18 months imprisonment on February 2015 but my sentence was suspended immediately and i was on probation period of good behavior bond. I completed 14 months probation period and then due to my visa expiry i had to leave Australia so i informed the police and parole officer and with their permission i left Australia in April 2016. Now more than 7 years completed after i was sentenced and i am now working in middle east. I want to apply for immigration to Canada but when i obtained the police clearance from Australia my criminal record is still showing which is affecting to obtain the visa . I want to remove that criminal record from my history kindly please tell me how is it possible ?