Fixed: When a ticket is deleted by generic agent job,  No such TicketID error (bug#9600).
Squashed commit of the following:

commit a2aa4c8422f94c917696674e8311e54898ce3514
Author: s7design <otrs@s7designcreative.com>
Date:   Wed Feb 26 01:50:14 2014 +0100

    Added next if !%Ticket for fixing message Need TicketID!  in Sys Log

commit 175c2d197d2578573921adc669b4adb4c319acb8
Author: s7design <otrs@s7designcreative.com>
Date:   Wed Feb 26 00:07:59 2014 +0100

    [Bug 9600] When a ticket is deleted by generic agent job, No such TicketID error

    Set Silent => 1 parameter in TicketGet function, that avoids the error message.