Hello,
Thank you for your question regarding removing a page from a hacked site. Since it seems you are running WordPress, try deleting the page, or post. Click Pages (or Posts), then roll your mouse over the page (or post) and click Trash. Ensure you are running the most secure version of your software by updating WordPress, your Themes and Plugins.
Here is a link to our helpful guide on Recovering after a hack.
Also, Live Support may be able to scan your account files and help quarantine or delete anything that is identified.
After you clean your files and site, you can Submit a Reconsideration request to Google.
Thank you,
John-Paul