PCI compliance applies to what your site should do, not what the user can do within their own browser. Your site certainly shouldn't store a user's credit card information. However, you aren't any more responsible for your user allowing their browser to store their information than you would be if they, say, wrote the info on a post-it note and stuck it to their monitor. Browser features are browser features, not something you should (or often even can) try to manage.
The only exception, as noted in the comments below, would be if you were developing an internal-facing webapp, where your organization's internal users were being prompted to save the credit card info of external customers. In that case, your organization may want to suppress this to prevent a potential PCI violation. But even in that case, it would need to be suppressed by globally disabling autofill via Chrome enterprise policy, as it's a browser feature that your individual web site doesn't have any control over.