tests: drop timecop gem.

test/functional/artists_controller_test.rb

@@ -139,7 +139,7 @@ class ArtistsControllerTest < ActionDispatch::IntegrationTest
 
       should "update an artist" do
         old_timestamp = @wiki_page.updated_at
-        travel_to(1.minute.from_now) do
+        travel(1.minute) do
           put_auth artist_path(@artist.id), @user, params: {artist: {notes: "rex", url_string: "http://example.com\nhttp://monet.com"}}
         end
         @artist.reload
@@ -153,7 +153,7 @@ class ArtistsControllerTest < ActionDispatch::IntegrationTest
         old_timestamp = @wiki_page.updated_at
         old_updater_id = @wiki_page.updater_id
 
-        travel_to(1.minutes.from_now) do
+        travel(1.minute) do
           as(@another_user) do
             @artist.update(notes: "testing")
           end

test/functional/notes_controller_test.rb

@@ -76,10 +76,10 @@ class NotesControllerTest < ActionDispatch::IntegrationTest
     context "revert action" do
       setup do
         as_user do
-          travel_to(1.day.from_now) do
+          travel(1.day) do
             @note.update(:body => "111")
           end
-          travel_to(2.days.from_now) do
+          travel(2.days) do
             @note.update(:body => "222")
           end
         end

test/functional/post_replacements_controller_test.rb

@@ -31,7 +31,7 @@ class PostReplacementsControllerTest < ActionDispatch::IntegrationTest
           @post.reload
         end
 
-        travel_to(Time.now + PostReplacement::DELETION_GRACE_PERIOD + 1.day) do
+        travel(PostReplacement::DELETION_GRACE_PERIOD + 1.day) do
           Delayed::Worker.new.work_off
         end
 

test/functional/post_versions_controller_test.rb

@@ -10,10 +10,10 @@ class PostVersionsControllerTest < ActionDispatch::IntegrationTest
       setup do        
         @user.as_current do
           @post = create(:post)
-          travel_to(2.hours.from_now) do
+          travel(2.hours) do
             @post.update(:tag_string => "1 2", :source => "xxx")
           end
-          travel_to(4.hours.from_now) do
+          travel(4.hours) do
             @post.update(:tag_string => "2 3", :rating => "e")
           end
           @versions = @post.versions

test/functional/wiki_pages_controller_test.rb

@@ -167,10 +167,10 @@ class WikiPagesControllerTest < ActionDispatch::IntegrationTest
         as_user do
           @wiki_page = create(:wiki_page, :body => "1")
         end
-        travel_to(1.day.from_now) do
+        travel(1.day) do
           @wiki_page.update(:body => "1 2")
         end
-        travel_to(2.days.from_now) do
+        travel(2.days) do
           @wiki_page.update(:body => "1 2 3")
         end
       end