Remove unnecessary execute_script call in feature spec

This call to `execute_script` would directly call jQuery's `sortable` function on an element to make it sortable. However, this isn't necessary; the test can still drag the "Cat People" aspect to the desired position without it.

features/step_definitions/aspects_steps.rb

@@ -119,8 +119,6 @@ When /^(.*) in the aspect creation modal$/ do |action|
 end
 
 When /^I drag "([^"]*)" (up|down)$/ do |aspect_name, direction|
-  expect(page).to have_js_defined("$('body').sortable")
-  page.execute_script("$('#aspect_nav .list-group').sortable('option', 'tolerance', 'pointer');")
   aspect_id = @me.aspects.where(name: aspect_name).first.id
   aspect = find(:xpath, "//div[@id='aspect_nav']/ul/a[@data-aspect-id='#{aspect_id}']")
   target = direction == "up" ? aspect.all(:xpath, "./preceding-sibling::a").last :