update reference examples with versions that do not vary by MPI rank count

examples/USER/misc/mop/data.mop

examples/USER/misc/mop/in.compute_stress_mop

examples/USER/misc/mop/log.5Sep18.compute_stress_mop.g++.1

examples/USER/misc/mop/log.5Sep18.compute_stress_mop.g++.4

examples/USER/misc/mop/moppz.time.reference

examples/USER/misc/mop/mopz0.time.reference

examples/USER/misc/mop/profile.z.reference