replicainstall: Admin password should not conflict with replica file

The --admin-password (-w) has its use both in domain level 0 and 1.

https://fedorahosted.org/freeipa/ticket/5517

Reviewed-By: Tomas Babej <tbabej@redhat.com>

ipaserver/install/server/replicainstall.py

@@ -1457,7 +1457,6 @@ class Replica(BaseServer):
                 CLIKnob(self.domain_name, '--domain'),
                 CLIKnob(self.host_name, '--hostname'),
                 CLIKnob(self.server, '--server'),
-                CLIKnob(self.admin_password, '--admin-password'),
                 CLIKnob(self.principal, '--principal'),
             )