Remove localboot provides.
Remove localboot provides.

The current element-provides points to localboot
which results in error. Removing it to make it work
as its not needed at all.

Change-Id: I506fbf460fad46aa9b9ba6dd82fb7524894bbbe7

openstack/tripleo-image-elements,rdo-management/tripleo-image-elements,rdo-management/tripleo-image-elements,openstack/tripleo-image-elements,radez/tripleo-image-elements,radez/tripleo-image-elements