Update Travis config to remove PHP 7.2
Update Travis config to remove PHP 7.2

Signed-off-by: Dillon-Brown <52f05eec3bdec5c60bb57cce11e7ff7d3df4620d@salesagility.com>

Dillon-Brown/SuiteCRM,Dillon-Brown/SuiteCRM,Dillon-Brown/SuiteCRM,Dillon-Brown/SuiteCRM