Remove DAV header check
Remove DAV header check

iCloud doesn't return anything useful while working fine otherwise.

credativUK/vdirsyncer,untitaker/vdirsyncer,untitaker/vdirsyncer,tribut/vdirsyncer,untitaker/vdirsyncer,mathstuf/vdirsyncer,credativUK/vdirsyncer,mathstuf/vdirsyncer,hobarrera/vdirsyncer,tribut/vdirsyncer,hobarrera/vdirsyncer