If you don't want to claim points of your wife then there is no requirement to submit any proof of document of your wife .Two more questions i have
1- For secondary applicant (my spouse) - do i need to show her work experience in work history for her - i feel since i am not getting/claiming any points for that - i should not show it- else i need to produce reference letters for her as well
2 - Do we need to fill in marriage date at any stage while creating CIC profile or it is to be filled in after ITA (AOR stage) ?
and ya, you have to submit merriage certificate at the time of submiting your express entry profile .