Revert "[puppet] Add cron job to restart our workers daily."

This reverts commit 0b0180b0751f6c618d877b9c9ffc2b8287254e4d.

(imported from commit a81c552100345d369ffcaf69f28a86dea0893128)

puppet/zulip_internal/files/cron.d/restart-workers

@@ -1,5 +0,0 @@
-MAILTO=root
-
-# Restart all of our Django workers at 7:37AM every day
-# This is to handle the fact that we have memory leaks.
-37 7 * * *   zulip supervisorctl restart zulip-workers:*

puppet/zulip_internal/manifests/app_frontend.pp

@@ -19,11 +19,4 @@ class zulip_internal::app_frontend {
     notify => Service["nginx"],
   }
 
-  file { "/etc/cron.d/restart-workers":
-    owner  => "root",
-    group  => "root",
-    mode => 644,
-    source => "puppet:///modules/zulip_internal/cron.d/restart-workers",
-  }
-
 }