Modify incorrect conditional statements in OCParseSecurityPayload

Modify incorrect conditional statements in OCParseSecurityPayload

Since, payload format changed as follows :

[ { rep: security payload } ]

to

{security payload}

We don't need check whether cbor value is a map.

Change-Id: I65912c4bacd9e33cee991d5ba37c8ae1b01d0f1d
Signed-off-by: leechul <chuls.lee@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/4511
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: dongik Lee <dongik.lee@samsung.com>
Reviewed-by: Sachin Agrawal <sachin.agrawal@intel.com>