remove unneeded Require statements in model/schedule

restructuring/model/preemption/preemption_time.v

 Require Import rt.util.all.
-Require Import rt.restructuring.behavior.all.
+Require Export rt.restructuring.behavior.all.
 Require Import rt.restructuring.model.job.
 Require Import rt.restructuring.model.task.
 Require Import rt.restructuring.model.processor.ideal.
-Require Import rt.restructuring.model.preemption.job.parameters.
+Require Export rt.restructuring.model.preemption.job.parameters.
 Require Import rt.restructuring.model.preemption.task.parameters.
 Require Import rt.restructuring.model.preemption.valid_model.
 From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq fintype bigop.

restructuring/model/schedule/nonpreemptive.v

-Require Import rt.restructuring.behavior.all.
-Require Import rt.restructuring.model.job.
+Require Export rt.restructuring.model.job.
 From mathcomp Require Import ssreflect ssrbool eqtype ssrnat seq fintype bigop.
 
 (** In this section we introduce the notion of a non-preemptive schedule. *)

restructuring/model/schedule/priority_based/edf.v

-Require Import rt.restructuring.model.job.
-Require Import rt.restructuring.model.task.
-Require Import rt.restructuring.model.job_deadline.
+Require Export rt.restructuring.model.job_deadline.
 Require Import rt.restructuring.model.schedule.priority_based.priorities.
 From mathcomp Require Export seq.
 

restructuring/model/schedule/priority_based/preemption_aware.v

-Require Import rt.restructuring.behavior.all.
-Require Import rt.restructuring.model.schedule.priority_based.priorities.
-Require Import rt.restructuring.model.processor.ideal.
-Require Import rt.restructuring.model.preemption.preemption_time.
-Require Import rt.restructuring.model.preemption.job.parameters.
+Require Export rt.restructuring.model.schedule.priority_based.priorities.
+Require Export rt.restructuring.model.preemption.preemption_time.
 
 (** We now define what it means for a schedule to respect a priority
     in the presence of jobs with non-preemptive segments. *)

restructuring/model/schedule/priority_based/preemptive.v

-Require Export rt.restructuring.behavior.all.
 Require Export rt.restructuring.model.schedule.priority_based.priorities.
 
 (** We now define what it means for a schedule to respect a priority *)

restructuring/model/schedule/sequential.v

-Require Export rt.restructuring.behavior.all.
 Require Export rt.restructuring.model.task.
 
 Section PropertyOfSequentiality.