Clicking the dropdown next to "Republish" on a previously published script in RStudio gives the option to "clear list". How do I clear all but one item? (Or how do I remove individual items?)
I want to remove locations 1 & 2, keeping only location 3:
First let me say that this is a feature that is sorely missing from RStudio.
Using your favorite file browser (or a command line), navigate to the folder containing the application. There should be a subfolder named "rsconnect". In there should be a folder for each server on which it is or previously has been installed (in my case just "shinyapps.io"). Drill down one more level and you'll find subfolders for each of the three locations. Delete the ones you don't want, and that should (hopefully) do the trick.