Revert "require php 7.1 during install.  closes #4984"
Revert "require php 7.1 during install.  closes #4984"

This reverts commit d09ba51605fe5f45a4653c8bdc65550eb04a0b6c.

ChurchCRM/CRM,ChurchCRM/CRM,ChurchCRM/CRM,ChurchCRM/CRM,ChurchCRM/CRM