Hello @kartik,
To be more specific, in admin.py of any app inside INSTALLED_APPS after 'djcelery'
from django.contrib import admin
from djcelery.models import (
TaskState, WorkerState, PeriodicTask,
IntervalSchedule, CrontabSchedule)
admin.site.unregister(TaskState)
admin.site.unregister(WorkerState)
admin.site.unregister(IntervalSchedule)
admin.site.unregister(CrontabSchedule)
admin.site.unregister(PeriodicTask)
Hope this works!