Let's say you use the Visual Studio Remote Debugger extensively, and with a wide variety of remote targets. Very quickly the list of qualifiers (see the image below to understand what I refer to) can grow quickly with 'noise' items.
If you were curious about where these are stored, they happen to be under one of the sub-keys of the following registry key:
Before you get any further ideas, I must include the statutory warning:
WARNING: Using Registry Editor incorrectly can cause serious problems that may require you to reinstall Windows. Microsoft cannot guarantee that problems resulting from the incorrect use of Registry Editor can be solved. Use Registry Editor at your own risk. If you edit the registry, click the following article number to view the article in the Microsoft Knowledge Base:
Description of the Microsoft Windows Registry