So, if you want a delete an app in Splunk, you could always delete every view in that app.
The app would live but there would be nothing in it.
Trying to achieve a better outcome that that.
I want to know how to delete it completely (again, NOT DISABLE IT by going to Splunk > Manager > App, actually delete it)
This is my confirmation : Go to App> on the top right corner of the screen, I can no longer see it.
I actually tried to go to $SPLUNK_HOME/etc/apps/ and deleted the folder for that app and restarted Splunk and that did not exactly work out (I had to restore the backup because Splunk started doing some weird crap)