Remove not used function.
Remove not used function.

not required that function.

Change-Id: Iabca8bbe212139c1e7e90a3cc2b0ddac53ec955c
Signed-off-by: jaesick.shin <0c15f419be0b798d814c9433c3dc372b1d1c1c73@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/10537
Reviewed-by: Chihyun Cho <b32a386441682bfbcf78768049c86636501c53fa@samsung.com>
Reviewed-by: Uze Choi <3a26c91d8a4a3c9e246e43339f4782bb2483aece@samsung.com>
Tested-by: Uze Choi <3a26c91d8a4a3c9e246e43339f4782bb2483aece@samsung.com>

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