org-agenda-skip-deadline-prewarning-if-scheduled

org-agenda-skip-deadline-prewarning-if-scheduled is a variable defined in `org-agenda.el'.
Its value is

nil

Documentation:
Non-nil means skip deadline prewarning when entry is also scheduled.
This will apply on all days where a prewarning for the deadline would
be shown, but not at the day when the entry is actually due. On that day,
the deadline will be shown anyway.
This variable may be set to nil, t, the symbol `pre-scheduled',
or a number which will then give the number of days before the actual
deadline when the prewarnings should resume. The symbol `pre-scheduled'
eliminates the deadline prewarning only prior to the scheduled date.
This can be used in a workflow where the first showing of the deadline will
trigger you to schedule it, and then you don't want to be reminded of it
because you will take care of it on the day when scheduled.

You can customize this variable.

This variable was introduced, or its default value was changed, in version 24.1 of Emacs.