Those are configuration files and basic script. They are inocuous and can be deleted without worry. To stop them from appearing if you feel you need to, remembering they're not harmful and will be regenerated by whichever program uses them, you will need to disable or uninstall the likely culprit. Right click one of the icons with a gear on it ( a config. file) and select edit, post a screeny of the contents, you might have to do that with a few before anyone can tell what created them.
Overall though it's nothing to worry about.