Remove RPATH from tests binaries

:Release Notes:
Remove RPATH from tests

:Detailed Notes:
Remove RPATH from tests to avoid bb QA warning messages

:Testing Performed:

:Issues Address:

Open-webOS-DCO-1.0-Signed-off-by: Maksym Sditanov <maxim.sditanov@lge.com>

Change-Id: I548ddf4c200ded59bdcc5ebed4e9c02cfad33b30
Reviewed-on: https://g2g.palm.com/3753
Reviewed-by: Build Verification
Tested-by: Maksym Sditanov <maxim.sditanov@lge.com>
Reviewed-by: Kyouhyun Hwang <kyouhyun.hwang@lge.com>
Reviewed-by: Maksym Sditanov <maxim.sditanov@lge.com>