Hi
The Visual C++ Redistributable files should only be a few MB at the most.
You cannot uninstall these.
When a developer builds a new software program, they use the Visual C++ versions that are available at that time. If a program is built using the 2005 version, then the 2005 redistributable files must be present on the computer, otherwise the program would not work properly.
This is why you may see several different versions installed.
Regards