So, the cleanup has been done. There are no questions tagged as asp.
From Let's Ban the [ASP] Tag on StackOverflow! the next step would appear to be making it a tag synonym.
From Stack Overflow a screen shot of https://stackoverflow.com/tags/synonyms
Which is probably what we should have too.
The way to do this would be to go to the asp-classic tag and navigate to synonyms - https://softwareengineering.stackexchange.com/tags/asp-classic/synonyms
The requirements for suggesting and voting on this are:
Users with more than 2500 reputation and a total answer score of 5 or more on the tag, can suggest tag synonyms. Users with a total answer score (total upvotes minus total downvotes) of 5 or more on the tag, can vote for tag synonyms. Suggestions will be automatically approved when they reach a score of 4, and automatically deleted when they reach a score of -2.
Since I've got nothing in the asp tag for answers or questions, I can't vote on this one (or suggest it).
And asp-classic its not that highly asked of a question area - https://softwareengineering.stackexchange.com/tags/asp-classic/topusers so there aren't many who do have the necessary rep to cast votes.
Its probably up to a mod to do this, if it is modable.