ca: remove redundant append of an intermediate cert
ca: remove redundant append of an intermediate cert

Immediately above this line we are already appending the full list of
intermediates. The `provider.ActiveIntermediate` MUST be in this list of
intermediates because it must be available to all the other non-leader
Servers.  If it was not in this list of intermediates then any proxy
that received data from a non-leader would have the wrong certs.

This is being removed now because we are planning on changing the
`Provider.ActiveIntermediate` interface, and removing these extra calls ahead of
time helps make that change easier.

hashicorp/consul,hashicorp/consul,hashicorp/consul,hashicorp/consul