There are ways, and im sure some users on here might remove older versions. m$ does give detailed information on how to.
Personally i would stay clear. Mor einformation can be found here http://support.microsoft.com/kb/829019
There are older versions for a reason. Uninstalling older net frame works could lead to trouble with older applications the framework was designed for. I would seriously suggest you leave well alone.
hello and welcome to the forum. It's always a good idea to search before posting suggestions.
this has been requested hundreds of times, and possible answers to why it has not been added have been given on numerous occasions
Just to add to dennis, Regardless of any over write, you are still likely left with the spill of data either side of the data track that it was written to.
Just a left over reg key, If yoy removed it. you removed it. You can remove it manually via regedit.
But unless it really really bothers you just ignore it. Wont do any thing.