Resolve "Logging in while having an expired token shows an unnecessary error"

See merge request !359

Co-authored-by: Fabian Seidl <fabian.seidl@h-da.de>

cli/cmd/login.go

@@ -59,10 +59,7 @@ var loginCmd = &cobra.Command{
 
 		// log out to remove active session in case an user is already logged in
 		if userToken != "" {
-			_, err := api.Logout(createContextWithAuthorization(), viper.GetString("controllerAPIEndpoint"), nbUserName)
-			if err != nil {
-				pterm.Error.Println("error logging out active user", err)
-			}
+			_, _ = api.Logout(createContextWithAuthorization(), viper.GetString("controllerAPIEndpoint"), nbUserName)
 		}
 
 		// TODO: maybe add credentials in context instead of context.TODO()