Remove unused local variables in service_impl.cpp
Remove unused local variables in service_impl.cpp

Change-Id: I56fa74d7e338419375f1d1cb0f4fdb5f937eb792
Signed-off-by: Radoslaw Bartosiak <b65bb9b305c85e583ba0204c7be7a4cfcdf37cd7@samsung.com>

Samsung/security-manager,Samsung/security-manager,Samsung/security-manager