My 2018 installs of PSPro don't have the Uninstall option in the programs menu, so your instructions don't work....

@danmasscpa  if you find the same thing, you can use these instructions to uninstall IL

For Win10
Right click the Start button > Settings > Apps   scroll down the list to Proseries 2018, click Uninstall    It will act like its going to uninstall the whole program, dont panic, it wont!   Another window opens with a list of modules to uninstall, choose IL state.   

I believe for Win7, its under Control Panel > Add/Remove Programs  Uninstall PS18