Edit template

Hello,
Im tryed to edit a template and deleted the “about” page. I deleted it permanently from dashboard.
It still shows when I preview the page or whe I open it directly thru browser. Already refreshed but the page. Not shown in the pages tab but still shows in the actual page… with the default message… “here you can write info about you…blablabla”
How can I get rid of it for good?
thank you…
John