Fix RuboCop linter error: Remove trailing blank line

Remove extra blank line at end of sync_job_test.rb to fix
Layout/TrailingEmptyLines violation.

Co-authored-by: jjmata <187772+jjmata@users.noreply.github.com>

test/jobs/sync_job_test.rb

@@ -30,4 +30,3 @@ class SyncJobTest < ActiveJob::TestCase
     end
   end
 end
-