Allow new open/close date of assessments to be before current time

Author: Wong-ZZ

lib/cadet/assessments/assessments.ex

@@ -33,12 +33,6 @@ defmodule Cadet.Assessments do
         Timex.before?(close_at, open_at) ->
           {:error, {:bad_request, "New end date should occur after new opening date"}}
 
-        Timex.before?(close_at, Timex.now()) ->
-          {:error, {:bad_request, "New end date should occur after current time"}}
-
-        Timex.before?(open_at, Timex.now()) ->
-          {:error, {:bad_request, "New Opening date should occur after current time"}}
-
         Timex.equal?(previous_open_time, open_at) or Timex.after?(previous_open_time, Timex.now()) ->
           update_assessment(id, %{close_at: close_at, open_at: open_at})