Issue 51051 - CLI fix consistency issues with confirmations
    
    Description:  The remove-all feature of dsctl uses different confirmation
                  prompt than "dsctl remove".  To fix this the "countdown" style
                  confirmation was moved to "remove_all", as "dsctl INST remove"
                  already had an additional argument.
    
                  Also cleaned up unused imports other various bugs found by my
                  IDE.
    
    relates: https://pagure.io/389-ds-base/issue/51050
    
    Reviewed by: firstyear(Thanks!)