If you would like the remediation to be completed only through a review, I recommend utilizing the 'Generate review for involved users using review definition' radio-button within the SOD rule to achieve the goal.
If 'Violation Remediation' is chosen on the SOD rule, the application expects the users chosen for remediation to perform some action on the violation. Unfortunately, I do not think it is feasible to suppress the buttons.
If you would like the remediation to be completed only through a review, I recommend utilizing the 'Generate review for involved users using review definition' radio-button within the SOD rule to achieve the goal.
If 'Violation Remediation' is chosen on the SOD rule, the application expects the users chosen for remediation to perform some action on the violation. Unfortunately, I do not think it is feasible to suppress the buttons.