BUG-731: Remove unused imports

Change-Id: I1cbc9fb3941c8630df21fc63ecf68576a883ae8c
Signed-off-by: Robert Varga <rovarga@cisco.com>
(cherry picked from commit e6267bd80b773f7deb6f10fc464e69310cfdd5c7)
Signed-off-by: Robert Varga <rovarga@cisco.com>