You've probably just come from a page marked with this tag. The tag would have been applied because sometimes a page is almost an OrphanPage, but not quite. This can be because it's referred to in lists of other pages - for example, suggestions of WikiPages that need ReFactoring - but not actually used in the context of ThreadMode or DocumentMode.
If you agree with the tagging of the page (be sure to check its BackLinks first), you can complete the deletion by replacing the text DeleteNoContextLinks with the text delete. If not, you can restore it from the EditCopy. It's good form to leave a note explaining why you think it was worth keeping.
For more on deletion, see DeletionConventions.