clean up endpoint methods.

clean up endpoint methods.

- There are not flexible things in CA codes which
  related to handling Endpoint.
  : all endpoint objects will be managed by remotehandler.c
  : all clone methods related to Endpoint will be managed
    by remotehandler.c (not AdapterUtil)

- fixed previous Transport type in some endpoint method
    since previous Type was still used in there (CA_LE / CA_EDR)
    so i replaced it with
    CA_ADAPTER_GATT_BTLE / CA_ADAPTER_RFCOMM_BTEDR
    (already done by https://gerrit.iotivity.org/gerrit/#/c/1401/)

Change-Id: Ib8400bbea0c3b4c005b8bec68ded2ed66c337c7b
Signed-off-by: jihwan.seo <jihwan.seo@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/1404
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Naga Ashok Jampani <jn.ashok@samsung.com>
Reviewed-by: Erich Keane <erich.keane@intel.com>