通常、ファミリークラスでの移民申請の場合、CICから提出の要請がない限り
カナダのpolice certificateは提出しなくてよいです。 http://www.cic.gc.ca/english/information/security/police-cert/north-america/canada.asp
Do I need to provide a police certificate when applying for permanent residence?
Only in certain cases. The Canadian visa office will tell you if you need a Canadian criminal record check while your application is being processed.
Police certificates
You and your family members who are 18 years of age and older and are not permanent residents or Canadian citizens must provide:
valid police certificate, or
police clearance, or
record of no information.
These documents are to be provided for each country other than Canada, in which you have lived for six (6) consecutive months or longer since reaching the age of 18.