replace meaningless comment with detail comment.
replace meaningless comment with detail comment.

OC is not available name as layer or module

Change-Id: Iba4cd83a3b59d3b82e720bcdb65930e7544f1a7a
Signed-off-by: jihwan.seo <69598d7552022c520cfdbefd16641727c7ff4ab5@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/2573
Reviewed-by: Erich Keane <ec9f61fe526c14bb62c55d7c978f025ee6b3583d@intel.com>
Tested-by: jenkins-iotivity <09cb29e8a2b473a2c978382eec13ee06fa017bda@opendaylight.org>
Reviewed-by: Ashok Babu Channa <72ac47ef856ca3d131a57cba474ebed48591eeff@samsung.com>
Reviewed-by: Patrick Lankswert <97f91fabd828c4bf3dd3b3638f2b6a4d81d5fd96@intel.com>

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