remove task dependency in job limited-preemptive preemption model

Job-level definitions should not depend on task-related modules.

restructuring/model/preemption/limited_preemptive.v

 Require Export rt.restructuring.model.preemption.parameter.
-Require Export rt.restructuring.model.task.preemption.parameters.
 
 (** Definition of a parameter relating a job
     to the sequence of its preemption points. *)

restructuring/model/task/preemption/floating_nonpreemptive.v

 Require Export rt.restructuring.model.preemption.limited_preemptive.
+Require Export rt.restructuring.model.task.preemption.parameters.
 
 From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq fintype bigop.
 

restructuring/model/task/preemption/limited_preemptive.v

 Require Export rt.restructuring.model.preemption.limited_preemptive.
+Require Export rt.restructuring.model.task.preemption.parameters.
 
 From mathcomp Require Import ssreflect ssrbool ssrfun eqtype ssrnat seq fintype bigop.