time_duration_spec.rb: Remove unnecessary `let!` & `subject`

These are holdovers from when these specs were copied from
`vehicle_journey_at_stop_spec.rb`. They're not used in our specs now so
get rid of them.

Refs #870

1 files changed, 0 insertions, 3 deletions

diff --git a/spec/lib/time_duration_spec.rb b/spec/lib/time_duration_spec.rb
index f55457e31..2d63eba76 100644
--- a/spec/lib/time_duration_spec.rb
+++ b/spec/lib/time_duration_spec.rb
@@ -2,9 +2,6 @@ require 'spec_helper'
 
 describe TimeDuration do
   describe ".exceeds_gap?" do
-    let!(:vehicle_journey) { create(:vehicle_journey_odd) }
-    subject { vehicle_journey.vehicle_journey_at_stops.first }
-
     context "when duration is 4.hours" do
       it "should return false if gap < 1.hour" do
         t1 = Time.now