Fix Asan build errors (#281)

Fix Asan build errors (#281)

Remove duplicate variables
multiple definition of `g_ESEasySetupResource'
multiple definition of `g_ESDevConfResource'
multiple definition of `g_ESCoapCloudConfResource'
multiple definition of `g_ESWiFiConfResource'

https://github.sec.samsung.net/RS7-IOTIVITY/IoTivity/pull/281
(cherry picked from commit 0cbbcfa65ff14d751dd1193f75b7c20269e26991)

Change-Id: If5f4a7d87e95350d70187cb21e070c5193130487
Signed-off-by: Oleg Ogurtsov <o.ogurtsov@samsung.com>
Signed-off-by: DoHyun Pyun <dh79.pyun@samsung.com>