tomcat::instance: remove require on ensure absent
tomcat::instance: remove require on ensure absent

Was added recently, breaks everything.

mcanevet/puppet-tomcat,ffquintella/puppet-tomcat,McLarenAppliedTechnologies/puppet-tomcat,ffquintella/puppet-tomcat,camptocamp/puppet-tomcat,camptocamp/puppet-tomcat,camptocamp/puppet-tomcat,ffquintella/puppet-tomcat,McLarenAppliedTechnologies/puppet-tomcat,McLarenAppliedTechnologies/puppet-tomcat