Improve some components for simple and performance.

Improve some components for simple and performance.

This patch is for apply offline code review comments by JungHo.

several method is made by duplicated code.
unnecessary valiable is removed.
lamda functions is used instead std::bind for reduce std::bind.
logic simplify for performance and readable.

Change-Id: Iefb0f4b3ee5ae99201127cd3343ea819f9f7fd3d
Signed-off-by: jyong2.kim <jyong2.kim@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/5335
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Uze Choi <uzchoi@samsung.com>