Revert "restart puppetmaster when rubygems is upgraded"
Revert "restart puppetmaster when rubygems is upgraded"

This reverts commit deb77f910acaa23b568e83fe300b7c72107654ba.

Restarting the puppetmaster during a puppet run is awkward, because it will
cause any subsequent File resources to fail, and also will cause the agent
to fail to send the report back to the puppetmaster.

alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet