This is just a really short instruction and explaination on the SITE_2 phenomenon.
This site is created for some reason in IIS after you have uninstalled SharePoint from a server.
Delete it by selecting the ‘Sites’ container and then right-clicking in the right pane on SITE_2, Remove.
If you click on it in the leftpane you will get an error…’The application / does not exist’
‘Til next time.