Make the schedule_build cron job quiet

As an administrator, it is not interesting for me to get emails from
GitLab CI that look like:

```
.
.
.
.
```

2 files changed, 1 insertions, 1 deletions

diff --git a/CHANGELOG b/CHANGELOG
index 1050f79..ceecc06 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -2,6 +2,7 @@ v5.4
   - Fixed 500 error for badge if build is pending
   - Non-admin users can now register specific runners for their projects
   - Project specific runners page which users can access
+  - Remove progress output from schedule_builds cron job
 
 v5.3
   - Remove annoying 'Done' message from schedule_builds cron job
diff --git a/lib/scheduler.rb b/lib/scheduler.rb
index 6c17f3f..217a0a5 100644
--- a/lib/scheduler.rb
+++ b/lib/scheduler.rb
@@ -8,7 +8,6 @@ class Scheduler
       interval = project.polling_interval
       if (last_commit.last_build.created_at + interval.hours) < Time.now
         last_commit.retry
-        puts "."
       end
     end
   end