I assume that you would completely like to delete the Adobe ID.The 30 day trial will get suspended on its own after 30 days , however the Adobe ID remains, in case you plan to buy or use any other trial, you can use the Adobe Id made out of your Email.
If you want to delete your Adobe ID and all services you have attached to it? For instance, you would no longer be able to see your order history on Adobe.com.
If this is the case, you will need to contact Adobe support. Here are some links to help initiate contact:
Thanks for the info...
You are welcome.